#1 - a U.S. adsense account holder must reside in the U.S. so I'd be interested to know why they allowed the adding of a foreign bank. They seem to have allowed a breach of their own rules.
#2 - Adsense accounts are NOT transferable, so why did adsense allow a NEW payee to replace you? Again, this would seem to be a violation of their own rules.
Shouldn't be possible, payments to the thief should fail for the reasons mentioned above and if they don't I believe you have a rather solid small claims case against Google adsense. They're doing what they say isn't allowed by paying the thief into his foreign bank account.