The part that's the most chilling in the video is when SA leans his head outside of the window and looks downward.
As if he was gauging the distance to the concrete dock below.
Purposeful, and not in the least 'confused and befuddled'.... " I thought there was glass..." He said in the video, slapping his knee several times for emphasis.
I wonder how he might try to explain the discrepancy between his emphatic “I thought there was glass” statement and the video clearly showing him leaning through the window and looking down. It could get interesting.