What's interesting about this is that more research has not been performed. Case studies are typically published only when stronger studies are not available.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3390214/Surprisingly few case reports and research studies are available that focus on the effect of manual soft-tissue manipulation by a health care professional to manage pain associated with Morton’s neuroma. Despite the high incidence of Morton’s neuroma, reviews of current research in 2004 and 2007 concluded that there is insufficient evidence in randomized control trials to determine the efficacy of either surgical or nonsurgical interventions ... While the findings will only describe the efficacy of massage with one person, this massage therapist hopes it will add to the literature leading to a larger and more comprehensive study of massage and Morton’s neuroma.