With one hand I wedged my elbow against... just kidding. I did it the way you shouldn't do it, but because my trans mount was 1 week new and I took care in placing the jackstand to support the trans at the forward lower pad next to the slave cyl. I had the car supported on jackstands, rear wheels on the ground and chalked. Then I raised the car slightly and slid a third jackstand under the trans and kept working with it until I could lower the car and have all 3 stands land at the same time. I checked the car for stability and then placed the floorjack under the crossmember. I unbolted the steering rack and tied it off with safety wire. I then unbolted the lower control arms at the knuckles. Then I unbolted the 4 crossmember bolts and slowly lowered the crossmember. Before the crossmember was clear of the studs I checked the trans mount and it's crossmember to make sure it wasn't going to let go. Everything looked good so down it came. I only needed to drop the crossmember as far as it would fall without pulling on it. That allowed me to get the necessary tooling up to the mount bolts. The passenger side was easy. I was able to get all 4 bolts from the mount bracket with a series of extensions and a swivel socket. The drivers side was a little tricky. The top rear bolt was a pain. I had to use a swivel headed ratcheting wrench and was only able to get one click of the wrench per swing. I was able to barely get my hand up there and turn it out with 2 fingers eventually. The other 3 bolts came out the same as the right side. Having a 2' 3/8" extension for the top forward bolt was the trick there.
Then back up with the crossmember. If I had to do it again I could probably do the whole process in about 3 hours with a lunch and pee break. Of course I've had many of the nuts and bolts off previously so there wasn't any resistance on much of them. Antisieze is your friend.