Steve,
I had surgery on my shoulder about a 18 months ago. Getting a good warm up is crucial for the loosening that shoulder joint. Workout two is absolutely more demanding on the shoulder. Here's some of the things I do:
Basic jog warm up and stretch
Resistance Band Warm:
Abbuction/Adduction
Overhead "thrower" rotation
Reverse adduction
Then I like to follow up with some of the basic warm ups you can do using the TRX, they are on the dvd and they really help get those joints loose.
One Gear-Full Speed
Bobby