Yah well this is who he is and it is how he likes to coach and he has brought the Dubs to where they are at now so how about you just let him do what he wants. It's no different than Phil telling Jordan and Pippen to read meditation books and take yoga classes.
Team knows what they are getting when they hired a pastor and he is doing a good job and his team doesn't seem to mind. Some of those players are probably a believer too. There has been reports where the team would go to Jackson church as a bonding experience.