I would have done that, unfortunately I sold BTC for EUR long before these announcements had been made.
Since these wires are now stuck at Mt. Gox there is no chance for me to just send the BTCs out to a credible exchange.

MtGox customer support can cancel withdrawals in progress (or at least they have in the past). It has to be done manually but you can open a support ticket, have them cancel the withdrawal, and buy BTC. I mean if you are convinced your money is 100% lost anyways why wouldn't you. Anything is better than -100%.