What event caused Mary and Bill to resign their positions and form their own orthopedic group as noted in the memoir, To Heaven and Back: A Doctor’s Extraordinary Account of Her Death, Heaven, Angels, and Life Again: A True Story?

One year, as the Neal family vacationed in the British Virgin Islands during Easter break, they heard a charismatic preacher speak about the power of God. The preacher's message was so storng that Mary and Bill decided to resign their positions and form their own orthopedic group.