Night_hawk got the point quite right already it is just for a week.
I'm not saying you were deliberately violating [DS] rules but by fixing your vehicle and quickly going back to BF you gained an advantage over other players.
Fix and flip commands are only supposed for Members and Admins who want to have some fun away from Battlefield while not participating in the combat that's going on in Battlefield.
You should not take it personal, anyway you will have your tag back after 5 more days so don't worry.