Although the newlywed, 26, doesn't take full credit for bringing a drowning woman back to life, he certainly aided in the process.
"I was approached by a family member telling me he had just seen a woman being pulled out of the water who'd drowned," Osbourne, who has been honeymooning in Hawaii, writes on his Facebook page, of the Oct. 8 incident. "I grabbed my friend Tyler who was a former Army operator and we went to see if we could be of assistance."
Pointing out that he is a former police reservist who has a lot of CPR training as a first responder, Osbourne goes on to say, "I am not an EMT or paramedic, but I have assisted in resuscitating individuals in the past."
Describing the woman as totally "unconscious," the TV personality says there were five people on the scene to help.
"A neurosurgeon from Japan had taken charge in trying to manage the chaos, though she did not speak much English," Osbourne writes. "The woman had a J-tube in her airway, and the defibrillator had already been used. Two women were assisting in chest compressions, and another was operating the Ambu bag."
Eventually managing to get the "woman's lifeless body" onto a golf cart, Osbourne and his pal switched positions, with the reality star straddling the lady in order to get the right amount of leverage to perform chest compressions.
"We waited for the EMT for approximately 4-6 minutes [in front of the hotel]," Osbourne says. "During that time, I continued to administer chest compressions. As soon as the EMTs arrived, I backed away and let them take over."
Rebutting "hostile and rather rude" online rumors that he claimed to take sole credit for rescuing the woman, Osbourne says simply, "I haven't said anything at all. The last thing I want to do is take all of the credit when in fact there were a few people who helped save her life."
On a brighter note, "From what I've heard, she's doing better and is now awake," he says. "I hope she has a speedy recovery."