I am out of the loop here but is this a response by GW for FFG starting their own war minis line? Or has this been expected for a while and GW and FFG part as buddies that just aren't renewing a contract?
While I believe many people would readily point the finger at GW to say that they are greedily and stupidly taking their toys away, I'm fully expecting that it's a question of both parties coming to an agreement that their partnership was no longer beneficial. Realistically, you can easily see that both companies have had an eye on each other's slice of the pie for a while now - FFG has been doing increasingly miniature-heavy war/board game hybrids, while GW has been doing an increasing number of boxed boardgame releases, including a re-release of one of the most popular dungeoncrawl games ever, the IP of which they have been withholding from FFG for years. I suspect they both knew date on their contract was coming up and they both agreed not to renew it. Both companies probably knew about that for at least six months I'd say, as evidenced by how far along RWM is design-wise and knowing that the entire concept would probably never fly on GW's watch.
You just can't resist being a GW apologist can you?