End of game ejection

[reffish]

Final horn sounds, H35 leaps off bench and starts to celebrate first win of their season. He leaps and bounds across the court and bumps into V5. My partner steps in between the two to separate them, they exchange words that I do not hear and then they step up to each other with fists clenched. At this point, I blow my whistle and announce the ejection of the two players. Coaches are at each respective player and have pulled them to their bench area. As we sort out the issues, the AD from the V comes up and starts to plead her case to exercise discretion regarding the report to be filed. My question or doubt is if the response by my partner, (should have talked about it and then file an incident report, not an ejection report) or my immediate ejection of both players was warranted. My thought process was the confrontation was after the final horn, we had not left the visual confines of the court, issuing a T would carry not consequence; therefore an ejection seemed appropriate at time. Questions and feedback? Thanks.