Why does FSD let me back in after a speed takeover one time, and lock me out the next?

I’ve run into one problem with the red steering wheel alert when I’m on FSD. If I accelerate significantly over the speed limit, which is sometimes what it takes to get around or past some traffic, I get this alert. FSD says it’s shutting down, it’s going to pull me over, and it tells me to take over immediately.

The last time this happened, I took over and immediately pushed the button to resume FSD. It went right back to driving. It didn’t pull over or do anything else, and it didn’t reset my drive streak.

Other times, no matter what I do, I cannot get FSD to reengage. The only thing that works is literally parking the car, locking it, stepping away from it, and then stepping back in and starting the trip again.

I didn’t understand the difference between one situation and the other, so I went looking for answers.

Tesla’s owner’s manual says FSD can only be turned on below 85 mph. It says the "Take over immediately" message means the system can’t steer the car. And it describes one situation where Self-Driving shuts off for the rest of the drive, which is when you ignore its warnings to pay attention. Speeding to get around traffic isn’t mentioned at all.

Other owners fill in part of it. A lot of them describe something close to what I’ve seen. Push the car past about 85 or 90 mph with your foot while FSD is on, and you get the red steering wheel, and FSD is gone until you put the car in Park. Owners call it FSD jail. Somebody posted about it today, after hitting 97 mph passing a slower car. One owner on 14.3.1 also reported that going over 100 mph at any point in a drive, even with FSD off, locks it out until you park.

Here’s where it gets murky for me. I’m certain I never went over 100, and I don’t believe I even hit 90. So I can’t say that speed is what separates my two situations. If the cutoff on my build is 85, that might explain it. If it’s 90 or 100, then something else is going on, maybe a different alert than the one I think I’m getting. Tesla doesn’t publish the number, and owners report different ones on different builds.

Has anybody else seen this? If you know the cutoff on 14.3.10, I’d like to hear it.