Risto, have you read the willy report? you can find it here:
http://willyreport.wordpress.com/What does it mean for the price of bitcoin and your investment strategy?
Yes I read it.
The main point is that when people send bitcoins or fiat to gox to trade with them, it results in:
people gox
bitcoins, fiat ->
-> bitcoins, fiat.
gox then issues goxcoins in the same quantity, also goxbux.
When Willy/gox buys the goxcoins for uncovered fiat (acting as a CB), it raises the price of goxcoins, and also of bitcoins in other exchanges. But there is no effect on the real bitcoins or real fiat (which are stored in gox) until the customers withdraw.
So during the runup, when gox was still by and large operational, they pumped up the price of BTC and ran into fiat debt, covered only by their customers' fiat deposits. Then they did not pay out the fiat to stay afloat. The higher price in gox induced people to try arbitrage, to deposit coins there, which Willy bought.
At the apex of the bubble, gox had issued a lot of goxbux fraudulently and ran a ponzi with them. They were correspondingly long in goxbtc.
What happened to the real bank balances of gox (in the tune of $100 million) and the real BTC hold (1MBTC?) is still unknown. Both were stolen in some point. This is where the theft occurred - what was played in gox' system goes under other crimes.
Then in the end all the withdrawals were halted and Willy put on reverse, to dump all the goxcoins bought. I do not know if this made a small or huge loss. Also I don't know the purpose of it, because all(?) withdrawals were canceled, and there was no change happening in the actual liquidity position, except the very last deposits made by arbitrageurs of goxcoins in btc/gxc-exchanges.
What the end result seems to me, is that gox pump did raise the bitcoin price. Also gox did act fraudulently for a very long time, and without proof to the contrary, also stole its customer reserves. Who is now holding the reserves, is an important question. Either the trading was so abysmal that they were lost as trading losses (perhaps to the insiders), or Mark holds them and is willing to risk prison because afterwards he will be so rich (yes, such people do exist that can live on after causing suicides of family fathers with their actions), or the 3-letter agencies hold them and Mark has for a short or longer time been a tool, either as a result of profession, bribery, or coercion.
For now, it is a small stain in Bitcoin's reputation that another few % of them are in criminal hands. But the main effect on price has been seen long ago, including the price dips in February-April. All those who lost in gox, need to get back into the game (if they want to stay), and judging from the price action in the last months, they have not done it yet en masse.
I am grateful to the author of the blog for explanation, but I don't think there is any relevance to where Bitcoin and USDBTC are going from now on.