Hi,
Sorry for the late reply. I took a look at the coding and went into the coding looking for that filter:
tribe_community_events_form_errors
I could not longer find that filter, it may have changed to this filter:
tribe_events_community_submission_message
You could try changing that.
I also found this hook that runs after an event is created that could be used to redirect, but would take modifying the snippet you have.
tribe_community_event_created
Let me know if changing that filter name works for you.
Thanks