9:34 AM PT -- Internet sleuths are callin' BS on Hardman's story ... claiming the wideout may have used an app to trick his followers into believing he actually broke his flat-screen.
The image Hardman tweeted looks a whole lot like a YouTube video that you can put on your TV to make it seem like it was broken. Several fans on social media believe Hardman did just that during "SNF."
Chiefs wide receiver Mecole Hardman, watching at home with an injury, missed the wild ending between his team and the Chargers on "Sunday Night Football" ... all because he broke his TV during the game!!
The Kansas City wideout -- who's on the IR with an abdominal injury -- was live tweeting during the game, and at one point said the drama was too much for him to watch, and he almost threw his remote at the TV.