The problem with trying this in a Bell 206 is that the throttle is not conducive to being played with, due to the limited travel between idle and fly. You need to be very careful, and if I remember rightly there is some caution about having the throttle anywhere except idle or fly.
It evidently did happen for real to a 206 a long time ago, but I don't know the details - pilot did exactly as has been discussed. But then again, the collective should never jam...
And if it did jam, would you know enough to report it as a Service Difficulty Report when you got on the ground???