Yay! I got it, it's a crude way to do it, but try this (worked for me):
log in as host, goto the menu Host-->SQL
and run this script
DELETE FROM Feedback WHERE FeedbackID = 1
replace 1 with whichever number post you want to delete, so if you have 100 posts and don't want the very last post, replace it with 100, keep in mind, u can't undo the procedure...hope this helps