Shaun White says he's real sorry for (allegedly) being a drunken mess Sunday ... trashing his hotel room in the process and (allegedly) attacking a dude.
The pro-snowboarder took to his Facebook account this AM, saying "I want to apologize for the unwise choices I made over the weekend and for any inconvenience it caused my family, friends, business partners, the hotel and their guests."
White was arrested for public intoxication and vandalism. He was hospitalized for injuries he suffered when he fell as he tried to flee.
White says, "I was celebrating a happy occasion with a ton of family and friends and got carried away."