Me and my friends did the cryogenic slumber part achievement a few times in previous games.
We came back and tried to go for the full easter egg this time but the Psi (spelling?) arm that digs into tunnel six never came down. I thought we had some bad luck the first game but this happened two games in a row and we made it into the twenties both games waiting for it. The other arms come down and I'd hack those and send them back and they'd come down again but never the one we needed to get the orb.
We all have the zombie achievements from the previous easter eggs so I don't think that's it. I noticed while playing Richtofen (spelling??) that I had the golden rod at the bottom of the screen AND what looks like some kind of silver rope/conduit right next to it. I thought it was some kind of power conduit that I needed to use to get Psi working but couldn't find anywhere to do it.
Have any of you experienced anything like this?