You got justice imo. Those guys are asses. If I ever t-bag a teammate in PvE I usually do it while I revive them. Then when I die they do it to me. It's a friendly gesture if you do it to each other without anyone getting mad. I usually send a message after saying lol and it was fun etc. and they don't get mad (most of the time) But it you do it to a person who is a friend of yours by all means it's a t-bag war whenever one of you die.