Since you mentioned the Ethos, i'll just go ahead and put this here:
Disrespect
When dealing with disrespectful users we advise using powers other than the ban or kick commands, rather try to use powers such as muting and warning.
You were given, not only two verbal warnings, but a mute and then when you decided to abuse the F1 system twice to try and disrespect me. I think my only other course of action was a ban if you ask me...