They literally have you go through "Worry Less, Live More: The Mindful Way Through Anxiety Workbook", so it's at least building off of it in some way. Mindfulness with a pain-oriented focus is not new.

Looking at their patient groups on Table 1, it seems MBSR and Usual Care had participants with more spinal injections and surgical interventions. MBSR and Usual Care have higher "Pain bothersomeness" scores and "Roland Disability Questionnaire Scores" at the start.

It's a very small-scale pilot study. I am very skeptical it's not a ploy to try to sell his books.