upside down phalaenopsis?

[GPeach]

Thank you for reading my post and I'm hopeful you'll have an answer.
I have had this medium sized phalaenopsis for 4 years and she's a survivor! What a beautiful will to live and please me. She blooms HUGE clusters every year dispute my abuse and repotting twice.
It started blooming this year the second week in February and it's past mid June and not one blossom has dropped!!!
Is this a record?
But, I noticed the leaves are floppy and wrinkled.
It's always had these crazy roots growing towards the sky! And they look wrinkled now! It doesn't seem to have many roots below in the medium. I've seen where people cut off all the dead "rear" portion of the plant and repot. Is this required at this time?
Is it dying?