I agree with TC: a genuinly stuck cyclic will kill you; a bit like double hydraulic system failure in a heavy aircraft. If its a restricted movement, then there may be some possibilities, like the high speed run on mentioned later.
Jammed collectives are a real possibility when there are other 'gubbings' in the linkage. The bell 212 has a 'mechanical fuse' (or weak link) that you can pull through, and break, in case of a jam in the doop compensation/N2 beep linkage. You'll end up with varying Nr with collective, and the Nr beeped to maximum, but at least you can still operate the collective.