I mean, Dwight does seem like a perfect candidate for a 1 + 1 type deal this offseason to try and rehab his value a bit and take the long term contract next summer for more money and stability. I think I'd still prefer Horford, but Howard would still be a great second option.
Hack-a-Howard is most likely gone next year, too, so that makes him more attractive.
I'd guess he signs in Atl, though, which would be good for us with Horford.