Hi. You can only cross the lines if you remove them at the compressor / solenoid end. I think he has left te Compressor alone.
Even if you did manage this, it shouldnt make bags go bang, but you will find briefly the vehicle going up and down because of conflicting signals from the sensors until the SLABS ECU recognises the disparity, logs a a fault and shuts down the SLS. It will do this before the compressor has the chance to get cranky and time out.
cheers

