I do not recommend pulling it out from one of the sides. Remove the side foam caps and then separate one of the lengthwise foam sides CAREFULLY and lift the prisma out of it's foam shell. You will see upon closer visual inspection that the lengthwise foam panels are glued at the corners. That would be a good place to separate them to get to the prisma.
I think there's a chance to snag a component if you just pull the tube out from the side of the foam casing.
Surely they are in antistatic bags inside the foam casing
Nope, no antistatic bag
Unpacking wasn't a problem. Instead of trying to pull the device out, I was able to slide the outer foam "case" off, it did not touch the caps or anything, the miner has some foam spacers around it.
I got it running with cgminer on Linux within about 10 minutes after connecting the cables, most of that time was to find the github link
https://bitcointalksearch.org/topic/m.9138614
Some minor quality issues (fan screws loose), other than that I'm very impressed. 1400+ GH/S as advertised. It's pulling ~5 amps at 230V on EVGA 1300 G2 (80+ Gold).