My EAS is still working.
I originally had an issue with EAS when I purch the phone (self signed certificate) and I couldn't get EAS to work until the 1.03 WebOS update on June 19. (Actually, a lot of the error msgs I've seen people post remind me of errors I had back then.)
Here's what might be of interest: (i.e. has anyone tried anything like this to resolve your issue?)
At that time of the WebOS 1.03 release back 19 June, I could only get EAS to work if I was NOT going through SSL in the "Incoming Mail Server" settings for my EAS account. To do this, I had to change my incoming mail server from "https" to "http" (no s). While not as secure, I could connect without the self-signed certificate (an issue resolved by a later WebOS update---but I didn't bother to update my incoming mail server settings, and I think that's why 1.2 didn't break my EAS).
Changing the incoming mail server setting might work for some but not everyone. AND, more importantly, I should add that if it doesn't work I can't tell you whether you'll "lose" your EAS contacts and calendar for the time being. (If you've already lost them, you probably got little left to lose by tryin'.)