Cubs releasing Gregg after tirade?

We mentioned on Thursday that the Chicago Cubs were making a late-season change at closer, swapping out Kevin Gregg in favor of Pedro Strop to get a better idea if Strop can factor into their future in the 9th inning. Any plans of that being a smooth transition vanished on Friday when Gregg gave up 4 earned runs in one inning of relief and unleashed on the Cubs organization afterwards.