I don't think they changed Les at all actually
Herrmann, Heater Chucked Into The DC Conversation
Tom Deinhart is hanging out at the coaching convention and says:
Michigan's search for a defensive coordinator continues. Two names making the rounds: former Michigan defensive coordinator Jim Herrmann, who coached linebackers for the New York Jets this season, and Florida safeties coach Chuck Heater.
Of course, everyone's first reaction to Jim Herrmann is "aigh!" Then everyone thinks about the 2005 season and doubles down on "aigh!" And then, no doubt, this will all be put behind us shortly. Herrmann makes no sense in a number of ways. After Rodriguez took a gamble on Scott Shafer that ended in dissention and disaster, he's repeatedly stressed fit and comfort as primary criteria in the DC search. AFAIK, he's never interacted with Herrmann. Also, Michigan fans were ready to run Herrmann out of town on a rail in 2005. A return would be awkward, to say the least.
Heater, on the other hand, is an interesting guy. He's an alum, the starting wingback on the 1974 team (he's sitting next to Dennis Franklin in the front row wearing #28 in this afro-tastic team photo). Since graduation he's been an assistant at a thousand different schools: Northern Arizona, Toledo, Wisconsin, Ohio State, Notre Dame, Colorado State, Colorado, Washington, Utah, and Florida. Aside from a couple brief stints as a RB coach and one year as a DC at Toledo he's been a secondary coach for the entirety of his career; he's also held the title "recruiting coordinator" for the past ten years, a span that covers jobs at four different schools. Much has been made of the close relationship between Meyer and Rodriguez and their respective staffs; chances are Rodriguez knows Heater pretty well.
The pro column: Heater's a career college assistant and alum who's been a key part of the Meyer recruiting machine for the past five years. He'll help out Michigan's Florida recruiting significantly, and he's been a part of what's normally a vicious Florida defense.
The con column: no DC experience, obviously, and it's questionable how much impact he's had on a coaching staff with Charlie Strong and Greg Mattison and so forth and so on.