How is the account titled? With rights to the survivor? If so, then whoever survives past the other will be the holder of the funds.
Since you say the account is held jointly, I see no reason why you can't withdraw the funds from the sale of your house, unless there are other issues that haven't been raised or considered.
Since you say the account is held jointly, I see no reason why you can't withdraw the funds from the sale of your house, unless there are other issues that haven't been raised or considered.