Is this a dead MMM?

[SilveradoHD]

I just finished up my Mugen XR conversion using a MMM v2, Medusa 2000kv, and a 5s Zippy lipo. Took her out just now and after a high speed pass the buggy locked up and would not go again. The steering servo stills works, MMM powers up and fan comes on for a second but then the red LED comes on. I cannot get it to power the motor. I tried reprogramming the MMM to Auto-Lipo instead of 16v and still nothing. My lipo shows 20v. When they die do they die completely or does my case sound like a dead one?