I issue #3 of the ROTS comic, Palpatine issues Order 66 and all the Jedi are wiped out in a matter of panels. (Hey, it works in comic book format a lot better than it does on screen.)
One of those killed appears to be Quinlan Vos.
However, in Republic #75, which supposedly takes place just a few weeks prior to ROTS, Quinlan has turned to the Dark Side and killed his Master.
So did someone make a huge mistake? Or did Quinlan very quickly redeem himself so entirely that the Council is already ready to trust him with an important mission again?