My guess is Mintpal was insolvent since the hack, they agreed let Moolah(who wasn't doing very well) take over to reduce panic/gain trust of the users. Joining forces made it easier to look solvent. Maybe they closed the site for an "upgrade" because volume was declining and funds for withdrawals were running out. The 0% fees would atract new funds. The panic of running out of funds may have fueled all the incompetence.
it's an interesting theory. but why the constant delay tactics evasive answers from them on everything and BS like today there was a 'critical bug' so they took the site down and not that they are dissolving the company so it's open season on the customer coins. and why no response to any support tickets or emails - still anyone received anything but a generic response?