I think that you are referring to Dan Abnett's run here and the Justice League putting the Titans on hold for a period after all that business with Troia.
As regards Flashpoint, if the Titans were even aware of it then that would have been through Wally. However, Wally was adamant during the Rebirth special that outside forces had manipulated the DCU timeline during that event (Dr. Manhattan) and therefore Barry wasn't culpable. The Titans certainly wouldn't have been aware of the version of Wonder Woman that existed in the Flashpoint universe.
Plus, are they gonna tell the likes of Superman where to go
?