If he is a bad admin report him with the following template and by posting in the correct section.
Warning: Spoiler![ Click to expand ][ Click to hide ]
[b]Staff Member(s) Name:[/b]
[b]Staff Member(s) SteamID:[/b]
[b]What Did The Staff Member(s) do?:[/b]
[b]What Server(s) Was This On?:[/b]
[b]Evidence:[/b]