First thing: breathe. Your phal looks fine. It is a mature plant and is just showing a little age. It has grown up out of its pot as these phals do. You should see some of the ones we have here! The dead roots at the top are not going to hurt anything. They have just 'dried out'. The red color on the underside of your leaf is Normal in many phals. Not a sign of too much light. Somtimes when a phal gets to much light the leaves will turn red on the top, but that undershot tells me that all is well in the light department.
About the split leaf: Again this happens. I always hate when it does, but these big phal leaves sometimes split. We have even had small leaves split right down the center. This could be caused by many things and there is not much to do once it happens. When we split one by moving the plant of dropping it or etc..., we usually dust the split with some anti-fungal podwer (cannot think of the brand name right now). This keeps the leaf from additional problems.
The roots in the pot look healthy, but the medium (bark mix) look very wet. Maybe you just watered? If that is the case, it will be fine, but the bark should be allowed to dry out a bit before watering again.
Again, your plants look fine to me. Others may have different opinions. Best of luck.