One of the smaller things that I see is the pointing direction of your slide foot. It seems as though your slide foot is pointing to the right of your target line and on some shots it seems like you are trying to hold it there. Your foot should either be pointing down your target line or left of your target line as you slide. This will provide you with a better base for balance so you hopefully don't "pop up" while your body tries to rebalance itself.
I noticed on a few spare shots that your body naturally corrected your slide foot as you appeared more relaxed while picking up the spares. Take a peek at the following times in your video for examples: 2:23, 2:40, 2:55, 3:55. Now compare those slide feet with your strike balls
Here's a nice article for your reading:http://www.bowl4fun.com/ron/tip25.htm
I hope my insight helps.
LS: 598 (194, 191, 213) on 01/13/2014
HS: 727 (267,276,182)
LHG: 300 - 12/28/09
LHS: 727 (300,226,201) - 12/28/09