Break through on the range just now. Reverse pivot? Weight shift? Can anyone explain?

I just got back from the range five minutes ago. Hit the best shots of my life. So good in fact I am scared I won't replicate it. Here is the jist of what happened. I haven't played in three months. Only hit range balls about 4 times during this time frame. Today had a 4 wood and gave it a full swing, got off balance, felt horrible. I figured I may have done a reverse pivot, actually felt myself leaning forward as I started my backswing. This longer club and full swing made it more apparent than usual I deduced. Anyway, I catch myself, start transferring weight to my back foot as I begin the take away, then think about putting weight forward at the time I am following through (forward)... I hit the best shots ever. Such better ball contact. Crisp even, a word that rarely describes my ball contact. I get so cocky, I break out a 3 iron (I never hit well) and fire three 200+ yard shots right up the middle with good altitude. Something I CAN'T do. Then I move back to the 4 wood, 7 wood, 7 iron, 5 iron, P wedge, etc.. with the same results. I felt like a 10 handicapper out there rather than near double that which I am. I usually have trouble hitting shots a bit fat. Not earth flying in the air fat, but fat. Loosing about 20% or so on many shots and at times enough to open the face and send a shot 30-40 yards right (and short). Would a reverse pivot explain chunky shots? What gives? Is it just a fluke? Stars in alignment? Or is a reverse pivot that much of a death move? Any thoughts on this greatly appreciated. I am excited and skeptical about going back to the range. Wonder if I can replicate what just happened?

Good points there man, I appreciate it. Don't have video but can see how helpful that would be. At 6'6" 310 lbs, I have always struggled a bit with having good consistent ball contact. Being out of practice and swinging hard this morning, the flaw was seen more perhaps. I literally felt myself swaying forward as I began the backswing. That is when I started doing the opposite basically. As I started the take away, I would put weight on my back foot and as I followed through, simply put weight on the front foot. This happened rather automatically and I only had to make an effort to put weight on the back foot as the swing began. In either case, I felt like I was coming down on the ball more and the contact was crisp. Sorry, I mean CRISP. Ha ha.. I do wish I better understood this and will be going back to the range in a few hours to attempt a repeat performance with some wedges and short irons. I am thinking the reverse pivot was killing me, but what is really "killing me" is how I could have done this for 20 years without realizing it. Is it possible? Not sure, but hoping so. In either case, the contact was crisp and not one shot was hit fat. Who knows?

I had one of those, hit my iron so crisp and the best i ever have at the range by keeping my spine angle and swinging around it. Unfortunately, the next time i went to the range... i was hitting fat shot after fat shot. Such is golf. But i hope yours stuck.

Just back from second trip to the range today. Same results! Hitting the most crisp shots I have hit in.... well, ever. Hopefull it will stick. Just thought about transferring weight in synch with the swing, onto back foot with take away, good timing/tempo, weight to forward foot on follow through. Seems overly simple, but the results are stellar. I am a bit skeptical, but perhaps the reverse pivot was a "death move" I had got used to and this recent break from the game allowed me to get out and notice it for the first time. Not sure, but today was a good day.

We will see what tomorrow brings

Sometimes everything just falls together. Don't get too negative though, and don't think too much. By the way, DAMN your putter is nice.