Just happened to look in, and saw this thread was active again.
No trouble getting down from the CRZ:
Idle power would be used (the ramps should cope with the change of airflow). Idle power at M2 resulted in a most impressive rate of deceleration (anyone standing in the aisle would probably find themselves sitting), which translated into a very high RoD. Well over 10 000fpm initially.
As such, reverse would be neither needed nor desirable; you would be well outside the envelope of idle reverse use anyway. (This function was quite rarely used as it was a bit of a faff).
The pilots would select the fuel fwd transfer override switch initially to cope with the decel, and the FE would set the fuel panel up shortly after the descent was steady.
All very dramatic, and never needed in pax service
afaik.