Had an odd game last night against the Pit Shifters (Grey Wizards).

On their turn 15 they blocked a couple of players in a confined space.

First had a push result. Dwarf Blocker was pushed into another player who did not move (who did not have stand firm). The pushed player was then teleported off the pitch as if he went into a pit.
Next a Berserker was knocked over and stunned. Again the player he was pushed on to did not move and again the berserker was teleported off into the dugout.

I upload the replay file.

On a separate note. This team had 3 ogres and 1 minotaur.
I thought teams were limited to 2 big guys!

This sounds like the same bug I, and a few others, have reported before:
viewtopic.php?f=13&t=620

Teams could have 3 ogres & 1 Minotaur if they were made before the ST5+ limitations were introduced - so I presume that your opponent just had an old team.