Thank you MI 2 AZ, and everyone who replied/posted.
I think I'm on the road to recovery after last night, though unfortunately was a case of "closing the barn door after the horses got out", as league play was a total disaster. Stayed after and at first I was just practicing the same bad delivery, but eventually started trying differnt things.
Tried slowing down (same delivery), more lift at the release (without slowing down), starting closer to the foul line and finishing in same place, ending up closer to the foul line (after starting at the same position), walking straighter, throwing caution to the wind and just flinging it, getting more loft on it, etc... etc... etc...
And finally.... in game # 8 of practice, I changed or adjusted about 5 things, but was first time ----possibly since last year---that I was doing them all at the same time, and suddenly I was more confident in my shots and was hitting them with some decent consistency. What I did was:
1) Started from a position a little closer to the pins. Usually am just in front of the first set of dots on the approach (closest to the scoring area) and I moved to half-way between the two sets of dots. About a 6-8 inch move?
2) Dramatically slowed down my walking, at least for the earlier steps.
3) Slowed down my arm swing (or at least relaxed it)
4) Waited to the last possible moment before releasing the ball to apply some lift (I have a tendency to turn my wrist way too early).
5) Emphasized the lift at the line instead of the force with which I was swinging through the ball. More of a swinging than pushing the ball onto the lane.
Results were 2 solid games of 222 and 220, with the 220 being a clean game, and even when I am not in a slump, I don't always bowl consecutive + 200 games.
That might not impress some of the better bowlers here, but for a reference point, I was averaging 190-200 last year and this year am at 165. Have been totally out of sync and lost. Felt like baseball player who had been hitting nothing but singles and bloopers and now I was hitting solid line drives and home runs again. I was even picking up splits I haven't converted since at least last year. A 6-7-10, for one. And ALMOST a 4-6 (clean shot between the gutter and the 6, but it didn't connect with the 4 anyway).
Moreover, am not referring to actual scores, or comparing league play to practice. I have been universally awful in every situation. Dropping the ball and then yanking on the next shot as I tried to compensate.
Last night... in practice games #8 and 9, I finally was enjoying throwing the ball, and throwing it with some authority.
So far only skimmed the links provided here, but even then the most important words that jumped off the page were the ones dealing with slowing down. I sped up again last night after I felt I had my stroke down, but it was different. It wasn't an undisciplined attempt to throw the ball hard enough to compensate for my lost coordination/timing. I was just returning to my comfortable speed, but AFTER I had slowed down enough to correct (or at least change) some aspects of my delivery.
Even though I feel like I solved the mystery last night, I am going to read through everything to try to solidify in my brain and remember so my practice session will carryover into league.
Thanks.