Reports suggest assistant manager Steve Bould steamed into the players after the 2-0 reverse.
The Pole told supporters: “We had a little conversation in the dressing room that was probably louder than usual. What happens in the dressing room stays in the dressing room but everyone was disappointed.
“I am not going to say we didn’t want it enough but Swansea wanted it more and it showed. That’s not good enough when you play for this club so I think before we start talking about qualities and what goes wrong tactically and stuff like that, you need to make sure everyone gives 100 per cent.”