I know you are talking in more general terms overall, but Lawrie at 3B would have been a longshot to stick - I'll admit I don't follow MiLB nearly as much as others, but from what I had read he wasn't exactly impressing at 2B. Melvin also traded for Marcum a few months before Rickie was locked up, the two moves didn't have anything to do with each other. Lawrie was expendable because he is projecting (again from what I've read) as a corner OF'er - for a guy who was drafted as a catcher with a power bat......... he loses a lot of value when he suddenly is an OF'er. Plus, the Brewers are set in the corners for years. Not to mention, I imagine the front office had a bit of concern when the kid they gave a check to, with six zeroes on it mind you, is duct taping 40oz bottles of malt liquor to his hand..............