I've experienced the same sort of thing from time to time - especially the "stay-at-home left hand" syndrome.
As long as it isn't having an adverse effect on the musical content of your playing, I wouldn't worry about it. There's "laziness," and then there's "efficiency." If I can find an easier (more efficient, more practical) way to express a musical idea, I'm all for it. If I'm just being lazy, and limiting my musical options because my hands or feet think it's "too much work," that's something different. When the latter occurs, that's when I berate myself to "get off my --- and stop being such a lazy -----."
That having been said, it's always good to go back and work those fundamentals, and it's often beneficial to revisit/review materials from the past.
Hmm...speaking of getting my left hand back in the action, where's my Joe Cusatis book?
