Hey folks!
I just wanted to jump back in to let you know that Event Tickets and Event Tickets Plus 4.1.2 were just released and included a patch for this issue. The public attendee list is now disabled by default for new and past events. Please update to the latest version when you have a chance and please feel free to open a new thread if you continue to have any issues with this or anything else down the road.
Thanks so much for your patience while we worked on this!
Geoff