The KINs were made with fairly powerful hardware, so if you can hack the software/firmware, they could make decent phones yet, just not as KINs.
Best idea I can come up with is closing the studio the way they plan and pushing an OTA upgrade to kill the whole KIN interface and replace it with WP7 or Android (or if you're REALLY crafty, iOS) designed to work with the KINs' hardware. Make it a bit more useful, rebrand the phones that were already made, and turn lemons into lemonade!
If I had a KIN, this is what I would do.