Yeah, you'd have to think there was some sort of falling out between Dynkowski and Brown after the interstate money transfer went kaput. Since the nine-fingered mule was a friend of Matt's from Florida, the blame must have fallen on Matt for that one.
After the money was intercepted in Texas, there was a "controlled" delivery of the cash in Delaware. I wonder if that means they bought the mule a plane ticket and flew him in custody with an agent in the seat next to him.