Hey Randy White, and others.
Well Pasqualoni's first season as DC at Miami (2008), the team at least went from allowing 27 PPG the year before to just under 20 PPG. This was the Dolphins amazing 11-5 turnaround under Sparano, the man Jerry spurned in favor of the hiked skirt and scented thigh of Wade, and sadly, Garrett too. (Sorry Hos).
In 2009, the Dolphins drafted CBs in the first and third round I think, and Gibril Wilson was the big dog FA they signed. DBs were the sticking point in everyone's mind that kept them from playoff success in 2008. According to Dolphins fan boards when Pasqualoni was fired, he was under pressure to start/play these rooks and Wilson too in 2009 even though Wilson sucked madly and was a huge disappointment and the rooks went through rookie DB failure. ... Probably having something to do with playing an easy schedule in 2008, then playing the tough sked in 2009 they were rewarded for all their success in 2008.
The only other thing I know is that Spears said that Pasqualoni is very detail oriented, whereas Todd Grantham let you figure everything out for yourself. (I don't think this was a compliment for Grantham). Grasshopper, I have a koan for you, and please snatch the pebble from my hand.
That and Pasqualoni had good years / bowl years as HC in Syracuse then a long period of mediocrity.
Oh yeah, and folks on the Dolphins board also cited Pasqualoni's "vanilla" schemes as a factor in his firing. Others defended him because of his green-as-grass DBs he was kinda forced to play to justify their draft spots and he played vanilla to give them a chance to save their skins. At the same time, his run defense dropped worse than the pass defense (his second year) as far as league rating goes.
Maybe what this team needs is a big dose of vanilla. Everywhere. Yes, running "vanilla" weren't we 3-2 in preseason? Man I'm a pretty smart dude after all.