I’ll recap what I talked about in the video. When doing push hands a lot of people will let pressure come in and onto their center. If they’re more advanced, they’ll be able to take that pressure and direct it into the ground. From that point a person might try to push back, turn and throw the weight off or just hold it there. There’s nothing inherently wrong with doing those things, but if they’re all a person does they’re missing the chance to exercise another essential tai chi skill.
Protect Your Center
As soon as you try it with a partner you’ll know exactly what I’m talking about. When even the slightest of force comes in towards your center immediately start to redirect it off and away from your center. It’s best to initially train this at a slower speed before working up to combat/competition speeds. Once you become adept at this you’ll find that people tend to throw themselves off balance because they’re not protecting their centers while attacking, they’re really off balance while they attack and/or they’re surprised by the feeling of not being able to ever touch your center.
So many things to practice so little time! 
So next time, have Shane try and deflect you to give those smaller people hope that they, too, can stand up to a big guy (or gal):)
Shane,
You are not leetle, but you do weigh less than 3/4 of Casey’s weight. Maybe you guys should ask Dez to show how it is really done…
Oleg
BOOM!
http://youtu.be/OFDfgfJeGn8