If the pilot does absolutely nothing with the cyclic upon encountering a right roll in low-g, will the mast still bump?
At a roll rate of 100 deg/sec you will very soon be upside down and mast bumping will be the least of your worries.
The TR is causing the roll so 'theoretically' right pedal might help but it's not something I would try.
There is only one answer - fly the aircraft within its limits and avoid low g at all costs.