My perspective, in chat log, Rabid, your chat is more offensive than Mythic or Darkwolf as you see.
<12:cat:5:57> "ADHD": Where is Towlie
<12:cat:6:16> "ADDDDD": wheres towlie
<12:cat:6:18> "ADHD": Tell him he is unbanned from XenoGamers Teamspeak
<12:cat:6:22> "ADHD": For now
<12:cat:6:47> "Rabid": oh
<12:cat:6:49> "Rabid": are u guys bronies?
<12:cat:6:53> "ADDDDD": Nope
<12:cat:6:55> "Rabid": naww
<12:cat:6:56> "Rabid": you are
<12:cat:6:58> "Rabid": probs darkwolf
<12:cat:7:00> "Rabid": kill your self
<12:cat:7:02> "Rabid": lmfaooooo
And like you said, you cannot verify that they mic spammed or anything but by IP.
Without the evidences that they spammed, admins cannot take any actions.
As you see in the chat log, if they ever spammed mic like troll shit, you should have say "STOP" but I never see you take that action. And just bitch about it.
Well, this was just my thinking about this little evidence and I believe admins already took care of it.