Interesting error. That the bed moved suggests that the print stuck down well, and then the nozzle collided with the print. The build-up around the nozzle is not necessarily a huge problem, so long as the wires are all still intact. Just heat up the nozzle to 180 or so. Then the plastic will become plastic, and can be peeled off.

Personally, I'd stick with one slicer until you are happy and confident with the prints. Changing too many things at once makes it hard to learn the effect of each change, and swapping slicers is a lot of change.