I'm with Roger on the momentum issue. The biggest thing I see with regards to this is that you definitely go to, and pause at, the dreaded "balance point". :shock: Your step to the side, IMO, reinforces that. My suggestion is to try stepping back instead of to the side and do not stop the forward motion of your centre of gravity at the balance point. Get that c.o.g. moving.
I think you're trying to "look like a pitcher", rather than throw the ball. Scrap the balance point, take your rocker step back rather than to the side, keep the momentum increasing, sideways. Your stride length should lengthen if you do this and your explosiveness will hopefully improve. If you try all of this, let us know how it felt and if it helps.
On pulling the glove to help with rotation, I'm a big "believer" that this is NOT what hard throwing MLB pitchers do. There are threads here somewhere that discuss this.