[nl12]

I have the Spektrum I believe when you bind the recever you can set the failsafe positions for throtle and steering, stock it is setup for nitro so it is setup for full break, when voltage is cutoff by the lisaver it goes to full break/reverse..... you are probably running a ubec though and it should be connected to the packs before the lisaver so the recever is always powered if that is the case then I dont know what is wrong, it seems like the recever is losing power for a moment and the specktrum takes a moment to come online and in that moment it would go to the failsafe positions. I would try setting the failsafe position to neutral, and also I have a capacitor from specktrum pluged into my recever maybe it would help.