[matt_st3 (Strongrule)]

Since this did directly interfere with the player’s round it amounts to either a misuse or an abuse of power. If it wasn’t done in revenge but rather in an attempted joke then it’s a little less serious. Still, this isn’t at all a proper use of the command on a player and should stop immediately. At the very least the admin should warn the staff member and perhaps add a strike if he feels necessary to get the point across.
As a general reminder to the staff team, please refrain from misusing commands for jokes. Yes it “okay” sometimes when the friend is in on the joke but when it happens to often it becomes common and those not involved get roped in because the staff member forgot to check with them first.