So far, there's only 2 NL teams that have buried themselves - the Marlins and the Rox. You probably have to assign one wild card spot to one of the Phillies or the Braves, with the other winning the division. Beyond that, it's just a bunch of teams in a pack once you weed out 2 more division winners from the rest. 9 teams for 2 spots.
But the thought for this thread is not what you think is likely. The thought is at what point would you move off of sell everything you can for prospects. Would the Nats being in a pack of 5 teams for 2 spots 2 weeks before the trade deadline even after you've sold some assets and called up Wood change your approach?
How much would you change your approach? Would you stop selling relievers and veterans like Winker and Thomas? Would you do things like cut Gallo and call up Blankenhorn or Yepez if Gallo is not hitting homers and getting on base at a decent clip? Would you look to call up Crews and House if they are ready and deal the guys blocking him (e.g., Thomas, Winker, Senzel)? would you look for a Candelario-like deal, but with us dealing mid-tier 40+ FV prospects?
Yes, he will not be here when the next winning season comes.
Also, this team is not finishing ahead of the Braves, Phillies, or Mets this year. Just be thankful the Phillies and Mets are loaded with bad contracts that will cause problems in a few years, but not this year.