ESC fried?

I just recently bought a brushed e-Revo and I think I blew the ESC.

I bought it new in mid August and registered it with Traxxas. Since then I had one of the stock batteries melt down which they replaced for me at no charge saying it could be a bad cell or bad ESC.

Anywho after running a few batteries through it today, letting it sit an hour or so, then putting a set of full DTX5000 packs in it, I turned the ESC on and smoke started pouring out of it. As soon as I saw it I unplugged the bats and let it finish it's smoke billowing. Now I have a paper weight. Can this be fixed? And more importantly will Traxxas stand behind this and help me out with a new one?