kitten_SALAD banned from surf

I got banned from your surf server for a day, it's okay because its only a day, but I would like to know why "Five" banned me. I was on banyo and I released someone from jail then shot them, next thing I know i was banned without warning.

I just noticed it said for spawn flashing, but this still confuses me, every round people were flashing spawns, I threw one grenade which I didn't know was an offense but seems harsh.