I made it through about 3 minutes of the video ...
1) He's clearly bigger, stronger, faster than the players he's playing against ... yet he doesn't appear to dominate the competition in really any of those aspects. He tends to stand-up blocks and waits to shed them instead of attacking and blowing them up.
2) HFNY pointed out that he seemed to lack read-recognition and I tend to agree.
3) What he did show a decent ability to do was deliver big hits and a reasonable motor if you look at it from the position that he SHOULD be playing not the position he IS playing
All in all, he seems like a guy that is playing out of position. Many good DE's started as HS RBs or LBs before outgrowing themselves and needing to transition to the line. While he doesn't necessarily look like he's got explosive quickness to him, I did see enough good things with his feet to think that there's at least something to work with. In the days of no scholarship limits, this is someone that you put on your roster, give 2-3 years to figure it out, and see if you can make him into a good player. But that was 30+ years ago. Now you're looking at a guy that is probably a lower half PAC offer for teams that can afford to take more of a higher risk/reward proposition or someone that probably fits in better playing in the Mountain West or WAC. Regardless, I don't see LB in his future ... it's as a DE.