Im pretty sure fabr indeed knows who his brother in law is. And Im sure he will be questioned (and should be), but lets not nail him to a cross just yet, when its entirely plausible, even more likely, his name was simply abused.
your synopsis completely defies logic...
ask yourself these simple questions...
why would Alberto deliberately implicate his own brother in law in a scam knowing that any fallout would lead right back to him... why not choose the Alias Sam Noi from the beginning?
why would Alberto use Itech Pro a company registered under Fabrizio Tatti as the front for such an operation (again this would lead right back to Alberto)
why would Fabrizio be completely silent from the internet since 2012 if he had nothing to hide ie why Keep a low profile now? (surely he would just be going about his normal daily business online)
why would Fabrizio not go straight to the authorities as soon as he discovered that his name was being used Fraudulently?
I will give you a more Logical Synopsis.
Alberto the mastermind behind Enso and previous bitcoin scams coopted his girlfriends/wife's brother into another one of his money making schemes.
Blinded by visions of mountains of gold Fabrizio decided to use his own name and relatively untarnished reputation to launch a Bitcoin Mining company.
Both of them, being located in Shenzen and convinced that it would be easy to outsource chip design to the mountains of cheap Chinese designers, set about looking for someone to design what they thought would be a reasonably straight forward Sha265 hashing chip.
Howard Wang an engineering (chip design) student sees an advertisement placed on a website looking for chip designers and decided to apply for the job.
Howard is told he will be paid in this funky new crypto currency called Bitcoin for his work.. and so he Liaises online with someone (either Alberto or Fabrizio) posing as Alesia Tatti..
After a few months of miscomunication and poor management Howard gets cold feet and leaves the company.
He is paid 10BTC for his efforts.
After Howard leaves it becomes apparent that there is no Chip all parties involved begin to panic...
Fearing the legal ramifications... Ethan Burnside (who together with TheSwede75 launched the IPO) decides to wind up his trading company BTCTC.
Fabrizio and Alberto begin to panic knowing full well that their so called easy chip design failed. instead of informing the investor community of their failure and paying back the remaining money.. they hatch a plan to rescue the company by pretending to hand the company over to Sam Noi, relisting Labcoin on another exchange and purchasing Hashing power off the shelf. All the while secretly moving the leftover 3500 BTC over to S.Dice so it can be mixed and therefore untraceable.
Initially the plan works... the new Alias controling the venture (Sam Noi) sets up purchased Off the Shelf hashing power in their office and creates an account on Elguis and then Ghas.io to prove that the company is indeed Mining....
Prety soon more and more investors become to get suspicious of whats happening and begin to dig a little deeper... at first Sam (i.e alberto or Fabrizio), tries to maintain the veneer of legitimacy by deleting the accusations as they are posted... later, faced with an overwhelming investor backlash, Sam decides to go silent and make plans for his escape.
at the moment we do not know if Alberto and Fabrizio are still in Shenzen but you can bet they have already long made plans for their escape. Will they try to maintain the charade by putting up more hashing powe?r... Maybe... will they flee china?.. Probably. will they give investors their money back? Possibly if they get caught and threatened with 10 years in a Chinese prison by the authorities HongKong.. If they get caught in china the funds might be seized as evidence and never returned.
IMO
it is no longer a question of whether Fabrizio is involved .. its more a question of whether he is willing to make a run for it and risk becoming an international fugitive and risk being jailed for many many years OR whether his conscience gets the better of him and he decides to own up to the farse and return the remaining BTC to shareholders.
I hope for his sake that he just admits he is a complete failure of a business man and gives the people back their money.. even 3500 BTC returned to shareholders would be worth more in FIAT currency at today's Exchange rates than the initial 7000 BTC.
Anyone who thinks they will get ALL of their money back is living in a fantasy land.. you all knew the risks when you started investing in BTC... and if you didn't.. you sure do now... take it as a lesson well learnt and lets hope Sammy comes clean and gives you some compensation for your troubles before the Lawyers and Authorities get their cut of the pie.
Just my 2c