Just to clarify, that video was shot at approximately 3:20 pm, so assuming a gravitational spinal compression ratio of 4:3 and a Saturday wake-up time of 9:30am CST, Matt's height should have decreased by no more than 1/16 of an inch by that time.
As for myself, Squadfather with great precision accurately gauged that my waking height of 5'11 and 5/8 had, in fact, slipped to 5'11 and 3/8 by that hour, thereby clearly demonstrating that under no circumstances can MattC's height possibly exceed 5'8 and 1/2".