I wouldn't get carried away trying to lower your alkalinity just yet. If it hasn't caused you problems in the past there's really nothing to suggest that it will cause you problems now.

Did you have a problem maintaining your pH in the recommended range (7.2 - 7.8) before the incident with the acid? Did you have problems with scaling? If the answer to both those questions is no, I'd get the pH back into range with, as you mentioned, small doses of acid and not worry much about the alkalinity. Even if you did answer yes to either or both of those questions, I'd work on the pH alone until it was reasonably stable for a couple of days before mucking with the alkalinity.