Oh man!

I take it you have perused their site and contacted them.
Try their forums? I don't have (or particularly like for that matter) McAfee, but am wondering if they have a 'restore' option? If needed files have been quarantined I can see why they are pulling their hair out over this one. Another curious person Q, have you tried to drag and drop said files onto your desktop? Dunno if that'll work, just a thought. Good luck and keep us posted, esp. if you find a solution that works, others will want to know no doubt.