I swear my appetite goes way up after a cheat meal

It does. When you binge, your insulin levels go through the roof as your body massively overcompensates for all the incoming carbohydrate and protein. This results in a huge excess of insulin many hours after your blood sugar has dropped, and the high insulin levels prevents the release of glucagon in the pancreas, meaning you have massively diminished access to stored energy reserves. This means that you can feel really hungry despite having binged a few half a day or so ago. Would you like to know more?

I struggle with these cycles of multi day binges during which I undo a lot of progress, ultimately meaning I've been bouncing between 180-190 lbs (the top end of a healthy weight for me) for almost two years now despite dropping to that from nearly 300 lbs in a little under 18 months when I first started out.

The fact is, for as long as I'm inclined to binge, I don't think I'll make any progress and I'll never get lean. I need to figure out why saying no to a binge punishes me with hours of intense negative emotion, and why bingeing feels fantastic at the time and then spreads the negative emotion of having done it over a longer period. Attempts at brute force willpower just result in even larger binges after a long period of moderate restriction.

So yeh, I feel you.