I remember this issue with vanilla DayZ. An abort timer for being in combat is cool - I don't even have a problem with being in combat when zombies are aggroing on me... I think that's a good thing to have. But, having a 30 second(?) timer when ever I want to leave the game is a tad bit annoying... especially since, for some reason, the timer isn't counting seconds, so it's more like a minute.
