In all fairness, we should follow up on the accuracy of that report, and find out if Keyes disputes some figures. Also, see if payments have been made. I have a friend who is good friends with Keyes, and I will ask him to have Keyes give a direct response.
I believe that much or all of the campaign debt has been characterized as salary to senior campaign staff, not debt owed to external vendors, etc. I suspect that, from what I know of Keyes senior staff, this means that the debt mostly represents years of salary to Keyes' top couple of people, who worked without receiving pay during most of the presidential campaign years, because they weren't in it for the money and could fortunately afford not to receive it. Without such generous people, there would have been no campaign. Due to our beloved campaign finance laws, such debt can't be forgiven - that would be an illegal contribution - and must be carried just the same as bills from outside vendors. But it is not true that the presidential campaign debt consists of legions of unpaid and long-demanded bills. I believe that claims the campaign debt was "settled" refer to all the remaining vendor bills, etc.
Again, I don't know all this for sure, but believe it is substantially true. If it is not true, we will no doubt eventually see articles about the starving children of printers and hotel owners ruined by the Keyes campaign.
I offer all this as a caution against taking these numbers at face value. The FEC system is not a friend of grass-roots conservative political campaigns.