Was Gary Busey's behavior normal prior to his accident?

Before his motorcycle accident in 1988, Gary Busey was known for his successful acting career. He had a string of notable roles in films such as “The Buddy Holly Story,” for which he received an Academy Award nomination for Best Actor, and “Lethal Weapon.” On December 4, 1988, Gary Busey was involved in a severe motorcycle accident that left him with a traumatic brain injury.