Weird mechanical issue today. I pull out onto a busy highway from a turnaround after spotting a nice slot that I should easily make it into with some enthusiastic acceleration. Roll into first without an issue and when I get near redline I attempt my shift to second. This is where I embarrassingly admit to an absolutely hacked missed shift - grind, revs run to redline, rolling in neutral. I've done it before, will miss one again, but it sucks every time. Anyway, I suddenly realize I can not get the car to go into any gear. Clutch fully depressed, but the stick won't slip into any gear slot. I threw on my hazards and managed to roll it to the side of the road and stop without further incident. Car sounds fine, but the clear smell of burnt clutch permeates the cabin. Try as I might I still can not get the car to slip into any gear - not even close. Just feels like I can't even find a notch to start in. After several minutes I turn off the car and let her sit. After about 4-5 minutes I fired her up again, and was able to get it into gear, but it still felt ... I don't know, thick. Within a few minutes, though, the shifting was as smooth as ever and the smell had dissipated. I got back on the road and babied her for a bit, and there were no odd noises or sensations to be had. Later I tried a few aggressive shifting runs and there is no sign of problems.
What the hell did I do? I'm thinking I must have heated some part up to the point that things swelled up and kept me from getting into gear, but if anyone can give me a better idea of what I did and how it caused that issue I would love to hear it. Also of course wondering if there is any long term issue I should be looking for. Any informed thoughts would be appreciated.