My guess is they do nothing at the deadline. No need to sell because they don't have any significant pending free agents that they need to worry about losing for nothing (unless you count Odor), and no one buys when they're in last place (god the AL East is insane). Best to just let a group that's having fun together keep on having fun.
I'm a Nats fan, not an O's fan, but I was at the game on Sunday cause I was offered tickets and wanted to see Ohtani and Trout. Those guys did nothing, but the O's were really fun to watch. Feels like it's been forever since I've been to a Nats game with that kind of energy.