He really gets over his toes a lot during his leg lift and drive. This activates the quads, instead of activating the glutes. This isn't ideal and actually hurts velocity.
He needs to get the weight back on his heels more, activate the glutes/hamstrings, which will allow him to stay in the ground longer. It typically will make you more consistent too - something he needs with all the walks.
Surely to god the Blue Jays are working with him to correct it.