[mike100]

For sure accelerator pedal input overrides the regen braking. I have also experienced spurious, and unexpected electrical faults during heavy dynamic braking (loss of function on the regen paddle). Perhaps they were resettable instantaneous over current or over voltage faults- I will never know for sure, but other drive systems have similar cut-outs to protect the power electronics from letting the smoke out.

A few times I have caught my foot resting on the gas pedal and a small bump will engage that. A few times it was clearly a system fault/reset as my foot was not on the gas.