John, I've exaggerated somewhat with the bouncing around part, but certainly did use some pitch to slow the rotor down, as little as I could get away with. If the rocking on the skids had been any worse than it was, I would have just started up again and departed.
Having said that, it was common practice for all on 205s at one place I worked - shut down, and pull a bunch of pitch to slow the blades more quickly than if they ran down themselves.
Everyone did it - not saying it was right, and there was some talk of it being bad for the TT straps, but the maintainers never voiced any concern about it.