I really don't get how something like a "money block" or insolvency should drive the price up, except there's a big demand from people, that have themselves dedicated to gox
by all means
All the insiders would transfer their btc to another wallet and request a fiat payout. As consequence we'd get a shortage in supply, but there should also be less demand on gox, because:
- the price on other exchanges is cheaper
- the discussion and opinions about that are free accessible to everybody
- most people aren't that stupid. true story.
What do i not see?

The money block or insolvency has the effect of making fiat withdrawals impossible. So there are tens of millions of dollars sitting on mtGox that cannot be withdrawn. But those people still want their money back, so the only way to get it is to buy bitcoins. Nobody is going to move coins to gox since they cannot get the money out, so we have a shortage of supply and a demand that is artificially inflated.