Hey Mad Dog, nice to see you again and hope all is well. 🙂
Sorry, there is no way to filter out events that were submitted from the Community Events form in the admin area. That’s a really great idea though and I can see how that would be helpful! If you have a moment, would you be willing to share that with us on our feature request forum so we have it on the radar of things to look into? For now, I think the closest way to accomplish that is requiring an account to post an event, which would then list that person as the author of the post–that would allow you to filter events by the author.
You’re right about searching for events in the admin area because that search is an extension of the of the default search in WordPress, which looks at very specific variables, such as post title and post content. For some reason, I want to say that this plugin does expand that search functionality, though it’s worth looking into first to see if it’s really a good answer for what you’re looking for.
Does this help answer your questions? Please let me know.
Cheers!
Geoff