I can vouch that sciatica is extremely unpleasant, having damaged my back over thirty years ago, and it poleaxed me. Physio finally sorted it out and haven't had a reccurence for a while.
After making a massive arse of things in his stint at Rangers, I was amazed, and delighted that he got the job. Sunderland came to their senses 12 games too late. One less team to worry about in the play-off melee.