To answer the OP's question, when the rear end kicks out, do not chop the throttle. Slowly roll off the throttle as the rear end comes back in line.
If you leave too much throttle, the rear will wash out and you'll low side. Chop the throttle too quickly and it will snap back in line and high side you.
Practice sliding a dirtbike and you'll see what I mean... Though, it's not really something you can practice for on the street.
Rocker59 (aka guzzimike), Aux Arcs
Moto Guzzi Sport 1100
"Do what you can, with what you have, where you are." - Theodore Roosevelt