Bostwick appeared in several minor movie roles in the 1980s, such as a sentry in My Science Project and a guard in Tron. He played park ranger Mark O'Brien in the horror film The Prey (1984). Bostwick later returned to Alabama and taught theater at Auburn University where he directed several plays, including The Ballad of the Sad Cafe. He occasionally appeared in films in the 1990s and 2000s.
