I had a similar but not so extreme experience. I tried on a CB 3000 for 3 days. Afterwards, when my mistress allowed me to unlock for release, I had trouble sustaining an erection. But afterwards it came back, though I had a couple other problems for which I would welcome advice.
I got epididymitis and still have some pain in my left scrotum. Also, I notice an increase bend in my penis during erection.. Has anyone had similar issues?