I couldn't find that SB at any of my (usually very good) sources.

I did find a number of references to "valve damage" in the event the camshafts and crankshaft were rotated independently. It's odd that valve damage can occur in a non-interference (free-running) engine however.

I also found some high-quality images of the correct method of 'capturing' the belt tensioner during timing belt replacement. I'll cross-reference my method with those methods already used in kpaske's efforts.