R2 Pro Frozen with drum spinning

My R2 Pro’s control panel is currently frozen with the drum spinning. I was trying to stop the roast by hitting the PRS button (that I have been doing since day 1) and the bullet did not respond. The drum continued spinning, but the time and the other readouts froze. It did go into cooldown mode even though the drum is still spinning at speed 8.

My guess is that it’s a firmware issue as the computer and the bullet aren’t talking to each other well.

The biggest problem is that I’ve got a rogue bullet that I can’t figure out how to stop the drum, short of unplugging it.

Has anyone had this happened to anyone before?

Under these circumstances it’s best just to cut the power and turn it back on.
What firmware are you using?