I think aggregating evidence on this matter is a good idea since other incidences are reported elsewhere as well.

E.g. http://www.reddit.com/r/Bitcoin/comments/1yuqao/fwiw_i_received_a_withdrawal_from_mtgox_sepa_that/

Then I talked on irc #mtgox-chat with a guy two days ago who received a non trivial payment after monday. I'm not too versed with irc, hence crawling the logs. Maybe someone can help out.

Getting organized and concise about it can help to make at least a fraction of creditors whole.