By the time it hits On-Demand, streaming, home video (Blu-ray/digital downloads), premium cable, standard cable, merchandising... I'm pretty sure Disney will turn a decent profit on it.
I'm sure it will be disappointing for Disney that the movie won't turn a profit before leaving its theatrical run, but they won't take a hit on it over the long run.
And that's something that a lot of people don't get. A film's profitability doesn't end when a movie leaves a theater. There is so much life in a film after that. I recall having arguments with Fred Archer (the greatest fan of Star Trek ever!!!... who questioned choices and attacked every new thing to come out regarding this) regarding the profitability of the JJ films and he would constantly spout a formula he read somewhere from some "expert" not realizing how much the marketplace has changed.
Is this disappointing for Disney? Sure.
Is it going to drown them and will they fire anyone over this? Despite what the OP believes, probably not.