I had to report back on the use of the foam roller to loosen up the IT Band.
There are several stretches to get the IT loose. For me, the foam roller rolling over the outer thigh (about 30 seconds) between hip and top of knee helps a lot. (another feeny idea!)
I was stretching and lite-jogging, then felt some tendonitis, when I got home I used the foam roller (in addition to other stretching), within an hour, my knee "clunked", like a knuckle crack, but, no tendonitis following day.
Foam roller IT Band stretch is now part of my ever increasing stretch routine.