Better not to if you can avoid it. Winter or early spring is a better time to repot.
One way to deal with it would be to lift it in the pot. Just push sphagnum down the side and under the roots, if possible. If the roots fill the pot it may be difficult. You also need to watch out for branches of the rhizome running under the surface.
If really necessary cut the pot off and carefully place into hole in new mix in a bigger pot, so as to not disturb the roots.