Don't know why Barton's gobbing off about the sending off*. Their player puts in a sneaky and gratuitous elbow. Not a jaw breaker by any means, but deliberate, petty and so needless.
*Yes, I know he doesn't ever need an actual reason.
I must confess that after seeing that angle (mine at the time was on the other side in the Upper Co-op) I may have to change my rate the ref view as that sneaky dig into the ribs was obscured