The Banks Pedal Monster is supposed to be designed with a fail safe for this very reason, the device looks for anomalies and bypasses itself when it sees problems.
It also runs off the OBD2 port, which is a stable power source, not the 5v pedal sensor line which is NOT designed to power devices like this.
So there are better designed devices out there, at least in theory. I would never buy one of the others but I do run the pedal monster. The second I hear reports about uninteneded acceleration is the second it gets dropped in the bin.