PHILADELPHIA — John O’Connor had his reputation forever stained by 40 seconds of videotape.

It cost him his job at Holy Family University.

He only hopes he hasn’t lost his career.

O’Connor wants to coach again, even after his first season at tiny Division II Holy Family was cut short after a videotape of a physical incident during a “combat rebounding” drill hit the Internet. His failed attempt at repairing his relationship with Matt Kravchuk caused him to resign Thursday night, a day before Holy Family’s regular-season finale.

O’Connor knows what he’d tell university officials potentially concerned about the altercation if he’s ever offered another coaching job.

“I never want to change my passion and my intensity toward the game and how I teach it,” he said by phone Friday. “I certainly would take a look at how I might deliver it.”

He described his life over the last month as both a “nightmare” and like being in a “plane wreck.” O’Connor believed he’d still be on the sideline, calling plays, barking instructions, had it not been for the video leaked to local news.

“When they kind of hung and buried me without due process, it made it difficult for me and my team to really kind of go on as we had,” O’Connor said.

O’Connor apologized to Kravchuk when they appeared Thursday on ABC’s “Good Morning America.” On the morning show, O’Connor apologized. Kravchuk did not accept it.

Once it became clear the relationship could not be salvaged, O’Connor called his team together for an off-campus meeting and resigned.

Holy Family issued a statement Friday that it had accepted O’Connor’s resignation. Holy Family athletic director Sandra Michael did not return requests for comment.

In a police report filed on Feb. 11, Kravchuk said he was grabbed and elbowed in the face by O’Connor, a move that allegedly resulted in a bloody nose and a bruised lip. The office’s Private Criminal Complaints Unit reviewed the matter, and determined the event does not constitute a prosecutable criminal offense.

Attempts to reach Kravchuk’s attorney were not successful.