Odd brushless problem!

[DaveG28]

Had a weird problem with my electrics last weekend, and want to guage opinion on what might be the problem:

In two races last sunday within a couple of laps of the start, coming off one of the jumps my motor died. After a few seconds it started back up going very slowly, and worryingly from this point the throttle was stuck on at a low speed no matter what I did with the stick (including trying to brake ).

Both times when it was switched off and back on it then went fine again, through to the end of the race too without the problem coming back.

I am guessing it can't be thermalling because its happening near the start of runs, and because I wouldn't expect it to fix itself and then run a firther 3 or 4 min without problems.

Someone suggested sensor wire (didn't have spares with me) so am planning to swap sensor wires before running this next weekend, but it seems odd to me again that the problem didn't then replicate more often?

Anyone got any ideas on likely causes???

Kit I'm running is:

LRP TC Sphere 2007
LRP 4.5 can with 13mm sintered rotor inside
Spektrum micro receiver
running in 4wd class (an Aero)

Cheers all,

Dave