No, it can't. There is already an extension for OF in Alfred 1 (http://support.alfredapp.com/extensions:productivity). I assume that it will migrated to Alfred 2.
You can easily define your own WF for 2 using the script in http://forums.omnigroup.com/showthread.php?t=21781. Creating a task with an embedded file was something I hadn't found else where so I created FW to get a feel for Alfred 2. It was a bit trickier than I thought.
(If Alfred 2 is released and nobody creates new WF for OF, I might create & share them. But OF2 is also in the making so let's see that they provide in terms of Applescript support, etc).