I was in a similar situation once, I also deposited with my wifes card and won a decent amount, then had problems withdrawing.
My solution was (via livechat) to explain, as mentioned above about them not being able to keep depo/withdrawal etc, and provide identification for the wifes card (ID,POA,UB) and tell them I had her permission. They then agreed to process my withdrawal and block the wifes card.
Had my withdrawal within the usual timeframe and havent looked back.
Maybe I was just lucky but worth a try.
