Not a surprise to reject that plea deal, prosecutors offered him 35 years for the 2 manslaughter charges (with time served he'd be out in 25.5 years) and then 5 years for fleeing the scene. He'd serve 3 years of those 5, so 25.5+3=28.5, at 44 that's effectively a life sentence, might as well roll the dice. If it was in the 15-20 year range he'd probably have taken it, prosecutors must think it's a slam dunk because that's not a very good plea deal offer lol.
Higgins had no criminal record, not sure who you're thinking of (2005 DUI dropped when the cop didn't show up on his court date).