Thanks for emailing the info through.
The feed only contains a handful of items and it doesn't include the one you mentioned (it's already become too old and has been discarded) so it's impossible to determine what happened.
Awasu shows feed items in reverse order of when they were received i.e. the newest ones first. However, if an item that has already been received is modified, it will move back up to the top, which is what I think has happened.
If you want to check if this is in fact the case, you can right-click on the item (in the item pane) and choose <i>Show revisions</i>. Just be aware that in 2.3.2, Awasu no longer keeps old revisions of items so if you want to do this and you are running 2.3.2 or later, you will need to explicitly turn it on (<i>Track revised items</i> in the Advanced page of the channel's Properties dialog).
Alternately, it could just simply have been a glitch on their server...