Today I was in the underground spar, "basement spar" level where there happen to be those silvery-metallic crates, I pressed the join button and decided to pick one up while I was waiting (don't judge me) another person entered the room and I was warped into the spar, holding my crate. Now at first this might not seem like a problem, but I wasn't able to throw the crate, Kyle dies and loses the spar. So a minor problem, but I can imagine abuse of it (taking advantage of people who aren't smart enough to resist grabbing a crate when someone tells them they have a "cool glitch" to show them)