I got the same vibe too, but I will also say that I dont believe theyd bring Masuka and Quinn back for just a brief cameo. I think at some point they are gonna get involved too. Especially Quinn. However I think Masuka might be the one capable of doing the most verbal damage to Dexter. Hes always had a way with words, but finding out Dexter is the BHB and confronting him face to face might end up being a crazy emotional scene, one where Dexters usual bullshit excuses wont have the slightest effect on Masukas disappointment.