Agreed....don't people have anything better to do than be tedious pains in the butts over people training....my god....go do something productive other than pointing your fingers at something that's really innocuous: someone training a skill up.The same could be said to you.
I get tired of seeing lively things in UO go away because some players don't want to see other players do something. As long as it's legit, let players play. It's not a Single Player game. Accept other players.
The idea that people care enough about this to page a GM, or interrupt the training by casting invis is just so grade school...
Grow up People!!