[Al Skierkiewicz]

Kevin,
I do not believe the motor would draw more than stall current in this configuration so I think there is something else taking place. As with any electrical device, they are subject to both input power and load variations. I suspect that the sudden load may be drawing down the power supply to the controller. This is possible with loose electrical connections, under size wiring and the possibility that the final gear ratios are too high. Teams don't expect that breakers are tripping but they may be and so are interupting the power input to the Jaguar.
From Luminary Micro...
Fault Conditions
A slow flashing Red LED indicates that the MDL-BDC detected one of the following fault conditions:
�� Power supply under-voltage
�� Over temperature
�� Over current
�� Limit switch activated in the current direction of motion
When a fault condition occurs, the motor shuts down and the LED indicates a fault state during the fault condition and for 3 seconds after the fault cause is cleared (except for the limit switch fault, which is cleared instantly). A slow flashing Yellow LED indicates that the MDL-BDC is not receiving a valid control signal.

Any of the first three could be occuring in your robot.