Illegal or Legal, what are your stipulations?

[blueballs]

I recently umpired an 18U Gold game. Home pitcher is textbook legal. Push, drag the whole nine yards.

Second pitcher pushes off but the push off foot kicks up and goes off to the right. I call illegal. Coach is upset, never been called, blah blah.

I keep calling it and end up ejecting two coaches, etc. UIC agrees but one umpires says to me after the game: "I wouldn't have called it because it really wasn't an advantage."

My arguement. 1) I don't see anywhere in the rule book (ASA) that I have the right to determine "advantage" in the FP pitching rule. My argument is, if she can't push and drag to pitch and has to lift her foot, it's an advantage.

2) When she tried to drag, she couldn't pitch.

Do you guys feel I made the right call?