Remember this thread?
http://www.chiefdelphi.com/forums/sh...733#post973009
EDIT:
I believe it did happen both in brake and coast mode on the Black Jaguar. It was one of the things I discovered when I was first playing with the BDC-COMM.
EDIT2:
Yes, this happens in coast mode. I just checked, and I keep my jumpers in coast position so I don't have the trouble with Jaguars failing from power generated by the motors when the robot is off.
I was experiencing this locked anti-phase when I was testing yesterday.