An isolated look at how Hicks uses his glove arm and lead leg in tandem to set up his rotational move.
Notice that as Hicks’ lead leg begins descending, his hands begin to break. And notice that as his lead leg begins to straighten, the glove arm begin separating from the body, held in internal rotation.
This combination of moves sets up Hicks’ move into footplant. As his hips open into footplant, so does the glove side. It is well timed: not early, not late.
Often, we look at the “problem area” instead of the cause. If you are having trouble with figuring out how to “stay closed” longer, or execute better timing overall, it often starts earlier on, up the chain. If the load is sequenced improperly, the unload will be as well.
Check the relationship between your glove arm and lead leg. Are they synced up? Are they giving you the chance to properly sequence later on in the throw?