It's not a DIY job to repair a window that's delaminating as far as I know. It may be worth it to get a quote from a local glass specialist that can replace the glass for you. Quotes around Chicago range from $250 to $300 for a brand new rear window installed. Give them a new seal and they'll replace it for you at the same time the window is getting replaced. Or find a window in the junkyard that's not delaminated and install yourself.

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Allen Kroliczek
Oak Grove Autosport | Oak Grove Autosport
01 G500, 82 300TD, quite a few more.....