Given that any pudding seems to get in these days, you cannot deny him. Would be funny though I would love him to fight once more and lose his '0' - he believes it is the be all and end all, together with 3000 meaningless defences..... for all that to collapse like a deck of cards, would be priceless.
By playing the political game properly, and paying off the people who can pull strings, if you really want it that bad. Personally if I was Joe, I would settle for the Knighthood that would surely come with a retired '0'......
I quite like him, I would just kick half the hall of famers out that are only included to stretch out the list a bit.