[russell]

I think the rules say that the judges may allow you to use the tether to get your robot off of the field. But as someone said (or actually probably didnt say) "dont bet the farm on it". And after the match radio communication is disabled, and if the RC cant connect to the OI all motor outputs will be disabled so it isnt possible. If I were you I would do like thoughtful said and plan on removing your robot from the field before using the tether, but if the judges will let you use it on the field then so much the better.