[Patrick]

So your using plugs to join the motor wires to the esc wires and just using the cable ties to keep all three wires in a neat bunch? Your not using the cable ties to hold the wires together?

Have you bent the motor wires around much? The stiff wires on the neu's don't like to be bent back and forth other wise the wire might break inside the insulation. Taking the cable ties off might have let the broken wire move and reconnect inside, just a thought. It does sound like a bad connector or broken wire somewhere to me, hopefully it's just a connection.