Backcourt Question

[Nu1]

Just curious if any one has been hearing this in discussions of backcourt violations...or if you've had partners or others you've observed calling it?

I had a somewhat heated (but all in good fun) discussion about this with several people I work with. (None are officials.) They swore that "breaking the plane" of the division line once you're in the front court was a violation. They gave me personal examples of games they've watched where officials called this.

I gave the jumping from the backcourt to frontcourt examples...and suggested they may have missed a toe on the actual line...but they swore that they saw this called. I've never seen it called.