I'm not an expert, but as far as I can tell:
- His 'hole cards' (the two cards you are initially dealt) are very weak. Statistically, from the outset, he has a very very low chance of winning.
- On the flop, he hits a pair of 8s, which seems good. But it's incredibly dangerous for him to continue to play, because the flop opens up a ton of possibilities for strong hands for the other players at the table (straight draws, flush draws). Postle has no chance of hitting a flush, and though he could complete a straight, other players have a higher chance of hitting one (as one of his hole cards, the 8, actually lowers the chances of him hitting a straight, whereas another player could have a hand like 6-7 or A-2.
- The turn card (4th card revealed) increases the chances of an opponent having a straight, and, I think eliminate postle's chances of hitting a straight. It also is another club, putting three clubs on the board, and so anyone who limped into the hand with two clubs has just completed a flush.
The opponents bet strongly, and both have a flush draw. It makes absolutely no sense for postle to play this hand (as the second hand of the evening) unless he knows that the other two haven't hit a straight or flush. His hand is comparatively very, very weak, and (again, I'm no expert), he isn't even playing a long shot. I don't think there are any major hands he can complete on the river.
Joey can get technical at times. On top of that, he's more of a Pot Limit Omaha player, than Texas Holdem. So he tends to gloss over the nuances of Texas Holdem.
Doug Polk is more "user friendly" if you want to learn more about high level poker.
It's a 4 hour video. If you got any specific questions, shoot.