The grey and black displaced and cut "cards" (for example, the one that appears at 2:07 in the video, after the removal of the Switchblade II cards) are artifacts that simply shouldn't be there. Also, the title screen is heavily corrupted at 10:54. Those artifacts denote wrong memory writes, so I'm not surprised by the crash on exit (which is another thing that never occured neither was ever reported to me). AmigaOS shouldn't matter as the game turns it off and hits the hardware directly. I guess it's an emulation issue. I'll try to see if I can reproduce it.
EDIT: I've played the game for a while on UAE with 68060 as the emulated CPU, but everything worked fine; I'll ask one of my testers to try the game on his real 68060 + AmigaOS 3.2 machine(s).