The latest version that I pushed, v2.0.0, has a "telnet.log" toggle command to only show chat commands, and a "telnet.exit". If you are using this...
I've been keeping my own fork of MCTelnet up-to-date, BukkitTelnet: https://github.com/StevenLawson/BukkitTelnet I posted a jar that works...
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