Owens was travelling back to south Wales from France after officiating at the Castres v Leinster Heineken Cup game on Sunday.
The accident occurred between Pyle and Margam as the 42-year-old drove home from Bristol Airport.
Owens tweeted: "Thanks all of u who stopped to see if I was ok after smash on M4. Vrry shaken but ok. Car is prob rite off though thanks to the police too."
He later added: "Really am touched that so many of you have sent messages and text me after the accident. I am ok thanks shaken and sore but ok. Thanks all".