ok thanks for the encouragement
man, I wish it didn't get dark so dang early otherwise I might get started tonight...
The sequence I used was (roughly) as follows (for simply re-indexing, just go down to point 5 where you can slide the mount back on the tbar and index it a couple of splines over. Make sure to mark the bar and mount so you can verify how far you've indexed it).
1) Jack the vehicle safely (jack stands, chocks, etc).
2) Remove all tension from the t-bars to the point that you remove the bolt. I used a 30mm impact-rated socket with a breaker bar. Don't use an impact too on spring steel. I purposefully didn't use a ratchet so I could count complete turns when re-torquing.
3) Undue the two front mount bolts to release the front mount. The shorter bolt is trapped so the t-bar won't drop straight down, but you will have a little wiggle room.
4) At this point I used a hammer to tap the mount forward while holding the t-bar toward the rear. It is loose in the rear at this point so you have about an 1" of play in the cage.
5) Once you get the front mount moving, spray some lube on it and work it back toward the rear to the point where it can make it down past the bolt.
6) Allow the assembly to drop down and toward the center below the exhaust. I removed the front mount to reduce weight.
7) Maneuver into a position where you have leverage and start working the t-bar forward and out of the rear mount. This is probably the hardest part.
8) Assembly is the reverse. After getting the first one in, install the tension bolt just to the point where you have no slack, then index side two to match. The driver's side is heavier so if anything have that side down a spline or two.
Rinse, wash, repeat for the other side.
Feel free to post or PM with Q's.