I am not sure. But if he didn't, he might make an excellent go between. So I don't think its far-fetched that Harlan is involved in some way.
However, the Packers need to cotton on to the fact that while they may want Brett back in the fold, he seems happy thumbing his nose at them.
Time for the lines of communication to remain open, but unused, by the Packers. When he needs the infusion of cash, he'll be back.