Just searched for "Starter Stuck" and got a few threads that helped...
I had low voltage on the battery for sure (I will probably need a new one on this bike I have had for only one week, history unconfirmable). The bike acted as if the battery was too weak to rool the started, so I compression started it, apparently with the starter stuck on and engaged. I am hyper sensitive of noises on the bike right now and I thought I heard some extra noise (starter, presumably) and went straight home, 2-3 miles, in 5th gear for the low rpms.
I got home and the bike kept the headlight connected as the starter tried to crank even with the key out. That is when I saw what I originally thought to be a fire coming from the area around the battery. I immediately grabbed a couple of 10 mls and worked to disconnect the negative terminal. The bolt/nut were very hot.
Any idea why I had Steam from the area around the battery vent? Is there a short in the battery or on the bike? Is it possible that there is alien intervention? Should I call ghostbusters? They never return my calls, f those guys. WT Proverbial F ?!?!...