Extremely viable. Papyrus has a good arm- really good, and as the bone comes down it cracks along a seam of the prism to send spiderwebbing cracks all along it....

And then simply shatter. The good news? It's broken, and the clones around them are following without a word as they scatter into light.

The bad news...

Is that Reira falls from the shattered prison upon the glass, and she doesn't move, her back to Papyrus.