Stuck Collective

I remember reading an article discussing how there were emergencies
that most emergency procedures don't cover because they are
statistically improbable of happening. This article specifically
discussed flying along at cruise and discovering that your collective
could not be lowered beyond your cruise torque setting.

Since cruise torque is generally lower than hover IGE torque, you would
slow your airspeed, and while this initially results in a climb,
ultimately you will slow enough to descend. I have demonstrated this to
other pilots without actually touching down, since the approach was to
a field. I found it was not unlike techniques I was taught to conduct
FADEC Manual approaches.

I was wondering,

1. Does anyone remember the article and its source?

2. Has anyone ever experienced that kind of flight control malfunction?

Linc