AFAIK international wires are working fine.
AFAIK, meaning before the DHS court order on Dwolla?
Why on earth would you block Dwolla, and let MtGox use wire transfers headed to or from the USA? You can easily block those.
If you're going to block Dwolla, it makes sense you'd also block wires. Otherwise what's the point? People will just use wires, what have you really accomplished?
I certainly wouldn't send or request a wire to or from MtGox. I'd let someone else test that. You can just convert everything to coins, move it off MtGox, and get your money from another exchange. Why even risk it? The DHS is after MtGox, it makes sense to avoid the drama and just use another exchange.