Even if you do a lot of diving, putting a hole or small tear in a showa glove is going to be like a once a year type issue, and remember your suit should be about the same pressure inside and out, so its not like someone is pointing a garden hose up your glove, even a large tear in your dryglove is just going to result in a soggy arm, even if you don't remove the equalization tube, even if you finish the dive, just keep that arm down instead of raising your hand on the way back up. For the next dive you'll obviously want new gloves and fresh dry undergarments. This isn't something I'd overthink.
TBH, when diving dry gloves I use wrist seals that are cut down a few rings and I just leave the thumb loops from my undergarments over my thumbs to equalize the gloves. I've torn gloves a couple times during trash cleanup and the only price to pay was a fresh pair of $5 gloves, cold fingers and a damp arm, not a suit flood, no danger or inconvenience other than the obvious.