Right now you are in 8th place with PF-PA of (-281), and Playstation has a PF-PA of (-255). Assuming they lose their last two games, you would finish 7th with a win, or if you lose by 26 fewer points than Playstation in the last two games.
You can't actually relegate from D.IV in the USA; but if you finish in 7th, you'll play a relegation playoff against the 6th place team in the opposite conference.