Hi everyone! A little update...
I got the dish down with much appreciated help from the engineer, but we had to do it in a hurry. We went up there the morning of the day demolition was starting. I threw all of the disassembled metal from the NPRM over the side of the building, and it fell two stories. One or two pieces got a little bent, but nothing serious. The mount was extremely heavy, and we didn't have time to lower it gently, so I threw it down too. The threaded rod that sets the elevation on the dish got pretty badly bent, but I think I can straighten it. Otherwise, the mount is ok.
Lastly, I had the not so bright idea to tie some coax from Master Control (they had hundreds of feet of very expensive Belden 1694 that got trashed) to the reflector and lower it using coax as a rope. I didn't have many other options, as the demo crew was waiting for us to get out of the building. Coax isn't very strong when it comes to taking the weight of a 6' fiberglass dish. When we slid the reflector off of the roof, the coax broke from the weight of the reflector. The reflector cracked about an inch into the dish, which I think can be fixed with some fiberglass repair material. I will take some pics and post them over the weekend.
All in all, a little damaged, but at least it didn't get bulldozed like a lot of other nice things did. A friend is going to help me load the mount and dish into a pickup truck and take it away. I will try to get some additional pictures when I go back over there tomorrow. Thanks to everyone for their welcome back messages and support, I really appreciate my family here at SatelliteGuys!