I assume you managed to enter the central room with the three statues of self-awareness?
Anyway, I was stuck on it last night for 2 hours. Here goes:
1) From there go on the broken bridge and toss a pyramid over the gap. Teleport to it and open the wooden door behind some rubble, which should unlock a teleport point. Teleport there (Source temple vault) and destroy the correct statue. If you destroy the wrong one, you will be teleported back to the beginning of the temple.
WTF! I destroyed the door and didnt trigger the portal. I walked around the central chamber for hours
This is a horrible bug/glitch