I've seen this in cases where multiple pages are significantly better optimized than the competition. Contrary to what other folks are saying, I think 301ing the inner page to the homepage would be shooting yourself in the foot. You're sacrificing page authority and known 'good' content to have only one page appear. Give your user double the opportunity to pick you, versus taking it away from them if you happen to choose in error. Spend time on additional content for the inner page (and any related pages) to try pushing it up. Perhaps some well-thought out links to the inner page would be a good thing, too.

Simply from a human perspective, I'd do something with the large blank footer area. Maybe add contact information, short testimonials, something that will fill that area out a bit.