Dry Roots Need More Water?

[Phyrex]

I've noticed that my Sc. Tokyo Magic was leaning more and more and decided to quickly pull it out of the pot check the roots and set it straight. What I found were, according to me, way too many dried roots where the velamen were falling off of. I've gone ahead and trimmed the dead roots and removed some left over sphag from when I bought it. I was shocked by the number of dead/dried roots on this guy. I'm wondering am I waiting too long for it to be watered? Is it normal to have this many dead roots in a year? Is it ok to remove the roots even though they're not mushy just dry, or does the plant still use these? It's just popping out new growth but I don't see any new/active roots. How far do I trim the dead roots, all the way to the rhizome? I know I'm asking tooooo many questions; sorry, I'll stop now.