OP1 Screen freeze + Won't turn off

Hi there! I just ran into a problem with my OP-1. I loaded in some new samples and while I was playing with different sequencers, my OP1 freezed on the “Marx was Right” window, with some coding/letters on top of it. Problem is: it won’t turn off, so I don’t know how to do a reset right now. Any tips?

Have you tried connecting to a USB port?

Of course, It will turn off once the battery runs out, but that will be bad for the OLED display. The only way I can think of is to open it and disconnect the battery.