Magnets or glue? No, I don't think so.....unless there was some on the can when I accidentally picked it up?

[Best not to think about any number of things they might be standing on in their attempt to find anything useful or get anywhere on the way to finding an exit. Though at times, depending on what they might stand on or in, that is easier said than done, of course.

Still, Usagi gives the hand stuck with the can another shake in demonstration and confusion.]

Maybe if you try pull it off?