The Cardinals have brought in Russ Grimm to coach their offensive line and he will make a difference.  Grimm has been a Pro-Bowl offensive lineman in his playing days and he’s helped develop a lot of Steelers offensive linemen into Pro Bowlers.  Look for him to motivate and teach the talented but underachieving offensive line of the Cardinals.  Running back Edgerrin James is likely to be the biggest beneficiary of the Cardinals improvement in offensive line as he often was getting blown up before he got to the line of scrimmage last season.  Also, improved blocking should give Matt Leinart more time to throw the football.  Russ Grimm was an excellent signing by the Cardinals.