Actually from reading more, i don't understand if MtGox is involved at all. Did the executable just steal the wallet.dat file from his hard drive and have nothing to do with MtGox?
Perhaps the .exe logged into his MtGox account through the browser? If so - I don't understand why he would think MtGox is culpable in any way, particularly if he was running java in the browser, clicked YES to all the warnings that said horrible things were going to happen to him, AND wasn't running two-factor auth on his account.
He went out of his way to let the hacker exploit his system. I would hope that anyone as "technically savvy" as him would have known these were all really, really bad things to do.
If there is any consolation, it's that the 34 bitcoins are likely going to be worth less than a $1000 by the end of today.