nope, it was Urlacher's total inflexibility, particularly his posterior chain that led to the end of his career. the man was fabulous in his day, but was one of the stiffest athletes out there the last 2 or 3 years of his career. it was going to happen at some point, no matter who he was chasing.
think about it. over the years, other than his broken wrist, all of Brian's injuries -- every one of them -- were due to posterior chain inflexibility (hamstring and calf muscle pulls, as well as his eventually chronic back issues).
the lesson here, kids, is to work on your dynamic flexibility every bit as much - if not more -- than your explosive power (what Brian tended to focus on
during his career).
Wilson was just the guy he happened to be chasing when the pull that ended his final contract season occured... he was kinda done, anyway.