Can It Happen?

Can the Colts go undefeated? Here is their remaining schedule:
Week 13 Sun, Dec 4 Tennessee Tickets
Week 14 Sun, Dec 11 at Jacksonville
Week 15 Sun, Dec 18 San Diego
Week 16 Sat, Dec 24 at Seattle
Week 17 Sun, Jan 1 Arizona

If they win their next three games they will have clinched home field advantage all the way through, after 15 games. They will be undefeated in conference so even if they lose the last two Denver can tie, but they have one conference loss. Remember the first game against Miami. If Denver loses a conference game one of the next two weeks than the Colts will have nothing to play for against what could be a desperate San Diego team.
I don't think Dungy will risk injury by playing his stars for the whole game, so San Diego or Seattle or both will end the Colts perfect season.
And those bitchy 1972 Dolphins will be able to have their champagne toast.