Pick out a ring gear bolt head one or two spaces away from the one you want to torque, and wedge a piece of flat stock between that one and the carrier housing. Use it as an anchor as you tighten the other bolt. Keep rolling the ring gear around one bolt at a time and wedging the one you just tightened until you go all the way around.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!