GIF: Hartnell becomes weak in the knees after offside call

Direct your attention to the left side of the ice surface to see Philadelphia Flyers forward Scott Hartnell physically demonstrate how distraught he was after an offside call.

Hartnell was ahead of the play (duh, offside) and threw his head back in disappointment, then fell without anyone around him crashing into the boards.

[Courtesy: CSN]

Hartnell was not injured on the play, but did get up slowly presumably out of embarrassment.