Honestly, its the worst.
Nokia not only secretly withheld their intention to back off with their Intel partnership, but they withdrew all support for MeeGo and their whole Linux (N900/N9/N950) offerings. Then they removed Symbian from "open source" and also said they were going to phase out Symbian, and probably S40 too. They fired most of their staff and gave away many talents to Microsoft.
Basically, NOKIA said they were going to become 100% Windows based.

For them to turn around and utilize S40 or Symbian or Maemo or MeeGo would mean one thing: they have no clue what they are doing, or how to do it!

The best strategy for Nokia now is to make sure Plan A succeeds. They need to develop Windows Phone 8 themselves and make it as good as iOS 5 or ICS, and sell it in devices as good as the iPhone 4S or Galaxy's.

If NOKIA fails with Windows Phone, they fail as a company and will be sold off like Palm. Probably sold in large segments to utilize their cash reserves and IP. The failure on Microsoft will be huge, however its nothing M$ can't bounce back from, since they have a promising offer with Windows8 and since WP8 can be licensed to other OEMs.

The best case scenario, is that Nokia becomes RIM. They offer a niche product, and gain a niche market. They break even in their quarterlies, but never making excessive profits like Apple, Samsung or HTC.

Funny that makes the post-iPhone deathlist: HP, Palm, LG, Dell, RIM, Nokia and possibly Motorola (acquisition pending).