When that happens to me(it pisses me off) I squeeze the trigger to about a 1/4 to 1/2 the way then let up to neutral then squeeze again quickly repeating. Hoping the esc finds a happy place and gets going. Maybe try No reverse or reverse/forward settings?
I'll give the double trigger a try, I tried foward only mode, but it didn't make any difference. Like I said I had never even noticed this until I started back racing. It just seems like an eternity when you in the heat of the moment. I guess the best answer would be to not spin out in the first place, but I don't see that happening any time soon.