How can I unlock my Evo if i forgot my PIN code and without erasing anything?

so I changed my lock screen PIN the today and now my HTC Evo won't unlock. I'm positive this password is correct so I don't know why it aint accepting it. I called HTC and they said that it should prompt me for my GMail account but it has not done so yet. I've tried 45 times and it wont ask me. I can connect to 3G so I have done that, in hopes that it will prompt me but it has yet to do so. Is there any way that I could unlock my phone without deleting everything off it? I have unread text messages that I have not been able to read so I want to keep them. I want to avoid the factory reset at all costs. If there is a way that I can at least unlock it to back everything up, then I will try it.
 
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