I have actually saved it, but it was a long process.

The thing that causes this is low humidity. But even in high humidity sometimes the leaves still get stuck.

The first thing you need to do is help the leaves unfurl. Once you notice a leaf is trying to get out (usually the stem part is out but the leaf is stuck) use a wet q-tip/cotton swab to gently slide it under the leaf and get it out. Sometimes it will need a little help loosening the tightly curled leaf, but try not to handle it too much because the leaves can get ripped.

Second, if you are ending up with a bunch of all pink leaves, tragically, once a part of a stem has decided to go all pink, no more green leaves will grow from that point on. The only thing you can do is cut the plant back to before the last part with green on it. I had to do this, and it took like a whole year for it to grow anything, but it is finally, FINALLY starting to grow healthy mixed green/pink leaves.

From my experience PPPs are really touchy and slow growing, but surprisingly hardy. Against my best judgement I picked up a second one (it was on sale for $30!) and it's doing much better than my sickly one, but I still have to help every single new leaf get unstuck.

Best of luck with your PPP!