A drunk Galavant falls face first into a pile of hay when he is put in the jail cell, and his left arm lands so it is flush against his body. The camera shows Isabella for a brief second, then back to Galavant and is left arm is now almost perpendicular to his body.
After knocking out Galavant, Gareth starts dragging him out of the cell by his left arm and his face almost dragging along the ground. The camera switches to a shot of Princess Isabella for about 1 second and then switches back to show Gareth still dragging Galavant; except now he his dragging him by his right arm and he is laying on his back. Not enough time had passed for Gareth to reposition Galavant and switch which arm he was holding.
At approximately 17:30, when "the King of Valencia" (Stanley Townsend) who is facing the camera, takes a swing at "Gareth" (Vinnie Jones) who has his back to the camera, you can see something hit "Gareth" head from behind.