TC
Yes..but hopefully the yaw and the falling RRpm indicator and/or the low rrpm horm will give you the hint that there's something that requires dropping the collective.
The robbie has a very good mechanical correlator which will wind off the ERPM as you do and hopefully it will drop it back to an idle or close to it.
But what you have to hope is that when the short shaft fractures the stump attached to the MRGB doesn't spin outwards and jam or at least slow down by hitting the surrounding bits. I think that is what happened in the west australian crash that stimulated the A.D. requiring the inspections for unauthorised mating compounds under the clutch sleeves.
RR