if you're interested in the mechanics of flying a u-2 and the protocols usaf pilots used (at least in the 50s and 60s), i transcribed a series of letters my grandfather wrote about it after his career ended.
Vernier is correct, hands off should have been handed off.
I saw a minor typo, but couldn't find an email address for you, so posting here in the hope you see it. In the first paragraph of the addendum you have an "Out contact" that should be "Our contact".
"From there you reduced the indicated by 2.5K for over one-thousand feet"
Thank You for posting this.