Regardless of how obvious it is, what you did accounts as RDM - Killing on suspicion, as KOSing off traps is
not valid.
The traps can be activated from quite a distance, so there is no 100% way to know who activated it, only in very rare occasions (for example, if a trap is activated in the Nether whilst there is only 2 people there).
Feel free to appeal the punishment using this template :
[b]Name -[/b] What is your in-game name?
[b]STEAM-ID -[/b] What is your STEAM-ID?
[b]Staff Members Name -[/b] Who warned you?
[b]Punishment Reason -[/b] What was the reason of the punishment(s)?
[b]Server -[/b] Which server did this occur on?
[b]Story/Situation -[/b] What happened?
[b]Extra Information -[/b] Anything you would find relevant to your punishments(s)?