They said publicly it was a "back strain." I have a bulging lower disc in my back and the symptoms I feel from time to time appear to be exactly what happened to Morel.
Morel also needed shots to help the situation. I've had those...sometimes they work very well, sometimes they have no impact at all.
They said it was a strain. I'm not a doctor but that sounds like more than a strain since it lasted months and required shots.