Back in the early 90's when I used to dabble in sample-based music (as in: everything sampled and chopped up from CD's) a common technique in breakbeat and drum & bass music was to take a sampled drumbeat of 4 or 8 bars, then chop it into 8 (or sometimes 16) samples. You could then shuffle them around in creative ways to create entirely new beats and weird rhythms.
Devoid of anything approaching a professional sample editor, we would quite literally take the number of bytes in the original sample and divide it by 8, then split the sample manually by taking the start and end of each segment in bytes. We didn't think about zero crossing or anything like that. The result was that sometimes the mixed up segments would join together perfectly, and other times they wouldn't. Of course this also depended on your accuracy in setting the loop point of the original sample to begin with...
The outcome was that some of the resultant beats would sound a little clumsy and rough around the edges. I think that was the sound they were going for here. It very much reminds me of some of the underground beats that were around at that time.