I appreciate the apology, but don't understand the explanation. After passing the camera car, you hang back on 103, and barely gain 1/4 of a car length in 4 seconds, moving up just enough to snag them. It didn't even look like you were trying for the pass at the time, instead you were waiting, but waiting too close, so that when he did move over, you touched.
Being on another cars 1/4 in a turn is the worst place to be. They probably havent seen you. Either get well up along side before the apex so they can't miss seeing you, or hang back.
Chotus! Chotus! Chotus! Chotus!