There are two issues here. The first has to do with BB policies on moving money. I don’t know of any way you could wire money to the US remotely, unless you have previously executed a wire transfer authorization (for example, I have one in place at Fidelity). It may be possible, but given how hard it is to do any banking here, I would guess not.
if you wife is here, she should be able to withdraw cash from your joint account. I don’t know whether she could wire transfer from the joint account (but I don’t see why not). But she should be able to wire cash via a service like DeeMoney or open a bank account in her name and wire from there.
The other issue has to do with restrictions on transfers out of Thailand imposed by the Bank of Thailand. I had to look into these when sending money to Dubai last year. To send money out of Thailand, a foreigner must be able to show that he previously moved an equal or greater amount into Thailand. A Thai person has to state the use of the money to be transferred. I don’t know if some uses prohibit transfer.
Good luck!