Bob:
Here's my solution. Don't avoid the range at all. Go out to the range and wash your mind of all technical swing considerations and start practicing going from one end of the spectrum to the other. In other words just starting hitting real fades, then straight shots and then draws. Regenerate any of your old (move the ball flight around) "keys" that worked for you in the past if you have to but don't get too technical about how you do that--just do it--hit those wide spectrum shots.
Again, wash your mind of all technical swing thoughts and as My Dad used to say; "Let the ball be your teacher". I'm confident you sure do know how to go from one end of the spectrum to the other and move the ball's flight around.
So just go to the range and do that and as you're doing it, again, wash your mind of swing thought technicalities and think you're 14 years old again.
I'll guarantee you your slump will pass!
If you're having putting problems the very same thing applies. Just wash your mind of all putting mechanics, read the putt and just hit it from here to there without a single putting mechanics thought--only just getting the ball from here to there (hole)!
You can pay me later!