Ok....Did Master Reset last night.
Suspicion: After previous MR's I always re-did the Mail 2 Storage Card Hack. MR doesn't touch the SD card, so all the old mail indices in the SD folder were still there.
My thinking is that the indexing involved for the messages in that sd card folder were getting confused with the new message indices and when a text message goes out with an index of an old mail....the old mail is attched to the new text and wala....the texting of old mail.
Anyway, that's my story and I'm sticking to it...
Seriously though, I have MR'd and cleaned out the SD Card folder I use for messaging and re-setup my configuration. Have asked friends and family to let me know if they get hit with those types of texts again from me.
Will let the group know in a week or so...