Dashboarding resets your classes you made during that gaming sessions. Dont ruin the games for the others, if your host you just ended the match prematuraly for everyone.
I hate dashboarders, it's incredibly annoying to have to go through that just because someone either A) got a little angry and decided to troll by dashboarding or B ) Didn't realize what they were doing when they dashboarded and irritated everyone around them.
I don't have much sympathy for dashboarders and the Peacekeeper is pretty easy to get kills with so I have faith you'll get it back up to it's previous standing.
Take it easy,