Oh, right, because Konoha is only the elders and it's not like he'd protect all the good people and his former friends as well and probably be happier helping them instead of just trying to kill any and everyone he hates...
Also, we don't even know Sasuke would have to find out about it, all he had to do was meet naruto under all kinds of circumstances. Tobi telling Sasuke about it was of course possible but in no way had to have happened at that point.
When he planted the Jutsu Sasuke was still working for Oro, iirc.