[Bungleau]

Killing the sphinx has no impact on the game. Everything else works just fine.

Now, as for the problem of running in circles... remember the crypt? There was a lever, well-hidden in plain sight? Well, there's another one in the Temple. It's hidden on one of the short end walls, on the inside. Put your left hand on the inside wall, and then walk around it. On one of the ends, you'll see the lever.