What back injury has Robles had? This, sadly, looks more serious than back spasms. Or different than the back spasms I had about 15 years ago. That went away after about a week with heat treatment and some sort of muscle-relaxer pills.
(Of course, I was strenuosly turning in my desk chair, sliding hard from right to left in my cubicle. Not sprinting to slide into 2B... )