Hi Graham -
The kind of tension I'm talking about precludes motion. If I were able to move in that state I'd make Frankenstein's monster look like a prima ballerina on a good day.
Ha, ha. That's what I was thinking but chose to put it in a polite way.
I would even suggest that even though you are tense body wise, because of your training you are still receiving and giving back, thus it is validating your ability.