Nicely done!
You'll need to edit your post and scroll down to "Manage attachements" and click on the button. At the bottom left you'll see your "attached" photos. Delete each one by using the X in the top right corner of the icon for each picture. Close the dialog box when all the attached files have been removed and... Voila!and now i cant get rid of the thumnail pics lol. daggum technology!