Because the longer they wait, the less they get in return for him. At least now (if they get an indication that he doesn't want to re-sign), he still has another year left on his deal so that will carry some value with it. The longer they wait, the more his value diminishes.
BTW, Stauffer just mentioned HF haha. Said that all the threads are "Fire This", "Fire That" and that some fans are enjoying the Oilers failure so they can say I told you so, or something to that effect. He's probably not too far off the mark actually.