I just finished it last night on my 225 hp roadster.
A couple of thoughts and a tip or two...
You have to give credit where credit is due - someone in the Audi design department really has a wicked sense of humor! Who ever came up with that engine mount (a.k.a. "The Evil Thing", or "TET") - man, that was wicked!!!!
It does come out - EXACTLY WHEN YOU NO LONGER NEED IT TO COME OUT! What a winner! I sat there a couple of times and actually cracked up at the whole thing - thanks to this thread, I was emotionally prepared, and took it somewhat with ease, but also with awe and amazement!
So here is a tip when putting the IQ Test/Puzzle back together again: Imagine TET never being fully removed (the Bentley manual assumes working around it. Though watch it - when the belt, pin-pull detonator, etc are all gone, it may actually fall out, and if you are below the car, land on your nose with unfortunate consequences...) So The Evil Thing needs to be back in its quarters, though loose, BEFORE you put in the new pull-pin, belt, etc. Sequence is extremely important in this. One way to do this practically, without a second pair of hands, is BY STICKING AN ALLEN WRENCH INTO THE LOWEST SCREW HOLE OF THE TET, ALL THE WAY THROUGH TO THE ASSIGNED SCREW HOLE IN THE BLOCK. This will keep the evil thing in exactly the position it needs to be, and loosely so, allowing you to do the rest of the job.
Other notes: I found no frozen or seized bolts whatsoever - this may have been the first for me on any car I have ever worked on. Kudos to Audi for that. However, putting in the chassis side of the engine mount ended up being more difficult, partially because of the alignment, but also because the new bolts felt like they were stripping the thread as if going in crooked, which they were not. It took a lot of torque (too much in my taste) to get them in, but in the end they were good - torqued down to the right value, and flush.
YOU HAVE TO HAVE A SENSE OF HUMOR TO DO THIS JOB - OTHERWISE YOU'LL END UP IN A STRAIGHTJACKED!