I don't know if there's a thread, but I was one of those. I burned out hard and didn't ride for 12 years. When I first test rode my heavy, long commuter, I felt like I was going to tip right over. But I didn't.
A couple of years later when I got back on a road bike I did have a couple of "newbie" failure-to-unclip tipovers.
Right at the moment, I'm coming back from an injury, so working back into it, but it hasn't been so long that I've lost most of my skills...
How long has it been? Road or off-road? Do you feel you have good traffic awareness skills? It's worth anyone's time to take a LAB skills course, but especially someone coming back to two wheels after a layoff. Just start slow and easy and short, don't worry about trying to ride like you used to - it'll come back.
Welcome to TE!