Ranger, I think sometimes our body--and/or our mind--has its own way of telling us we need a break. That may explain a lot of slumps. In that case, the best thing is just to go with the slump, so to speak.

Sometimes, too, it can be a resistance to "starting all over again" with a new piece of equipment, learning its quirks and getting it just right, etc. This happens with software a lot. You buy some wonderful new program and then dread using it.... I would think it less liable to happen with bikes, though.

My guess is: you needed a break!