Why not a technical foul as per rule 10-3-3-
"A player shall not leave the court for an unauthorized reason....". Isn't it a T under that rule as soon as soon as A4 steps OOB? Of course, isn't it also a violation under Rule 9-2-12 as soon as A4 steps OOB also? Which rule has precedent over the other, and why?
Discuss amongst yourselves.