I have waited a while to post this to make sure my decision stuck, and now I can say that thanks in large part to the information on this forum (and some private emails from members), I made the choice back in late October to discontinue Lipitor which had been prescribed following my mild (well, I lilke to put a positive spin on it) heart attack on September 6.
I am hopeful that given the short duration of my exposure (6-7 weeks all told), I won't have any permanent damage. Leaving aside my hypochondria I am not aware of any clear-cut symptoms that I can attribute to the drug, and indeed I was not aware of any whilst I was taking it once I went from 80 (which was giving me PVCs) to 20 -- perhaps my muscles hurt more than usual, but the issue was confused for me by exercising for the first time in a decade. I would love to have some absolute reassurance that I did not permanent harm, but I know it is impossible to know. Indeed, I did receive some rather alarmist communications from one or two people indicating that it was too late, the damage may already have been done with the ingestion of the first pill, but I hope they are wrong.
In any event, thank you again, I hope there is some measure of satisfaction, for those of you who were less fortunate than I have been and were on the drugs for years, to have helped others.