Hey Todd,
Sorry for the trouble here!
I’m afraid that editing an attendee’s information in not yet supported. That’s the bad news.
The good news is that it will be possible very soon. We’re currently planning to release a feature for members to edit their own information in version 4.2 (we’re currently on Event Tickets Plus 4.1.2), which we hope to have out sometime next month, if all things go according to plan.
Sorry for the bad news, but I hope the good news helps give you an idea where things are heading. 🙂
Cheers,
Geoff