RE: Same problem.
Would just like to say that I had the same problem; went down to Glottis once, had no chance to get down there again (as you described, Manny just automatically walks up again). **HINT** However, you don't need to go down there again, I just completed year 3. So don't worry about that, it won't affect the game very much.**END OF HINT**
P.S: I got the patch installed.