Section 14. Ejection
Art. 1. Ejection is the act of immediate dismissal of an individual from participation in a game because of a specific infraction of the rules.
a. In addition to being disqualified, an individual who is ejected shall leave the playing court and floor area and report to his team’s locker room until the game is over.
That is the rule in its entirety. Does not say anything about returning after the game.
Perhaps someone was being overly cautious.