There was an article that went in depth into not only DPI, but overall penalties against Alabama. The author did some pretty in depth statistics into average number of penalties our opponents had in games not against us versus against us and also penalties our opponents, opponents has against our opponents, versus what we had against us. Long, long story short is that despite all the bellyaching we hear about the refs being in our pockets, it data and statistical analysis shows that the refs are much, much less likely to call penalties against our opponent when they play us, versus the opponents others games and much more likely to call penalties against alabama, than against our opponents opponents. It's like the refs hold alabama players to a higher standard, so if it's close to in doubt call it against alabama, and unless it's totally obvious, don't call it against our opponent. The analysis proved that it was well outside of any type of margin of error or possible standard deviation, well outside.
How else in the world could it be that not one single time in his last season at Bama was did Will Anderson draw a holding penalty? Seriously, one of the best pass rushers in NCAA football in the last 10 years and he was never ONCE held across and entire season? Really? Dude went on to have 10 sacks as an NFL rookie and not a single OT ever grabbed more jersey than they should have in college. Stuff like that just isn't possible
So I guess it comes down to; were the Refs biased against Alabama because of Alabama, or because of Saban? If the former, we'll probably still get more than our fair share of flags against us across the board, if the latter, maybe we'll see something different.
Back to DPI though, others have mentioned we might play more zone, and that's certainly true of both how USA and UW played, and that can help reduce DPI since guys aren't playing press/man quite as much. The question is if USA and UW were running more zone because they just didn't trust the CBs in man. If that's the case and with the athletes bama has, they could use man coverage more than they have in the past.