Hi Dave,
If I may I don't think your non centeredness or the slight hot spot is the problem here. My first thought when i opened the photo is "how steep is that landing?" I don't think your choice of framing does this any justice. May I suggest that shooting this vertically would be a better option. Maybe get as low as you can and get a bit wider (without making him to small in the frame) and show us the landing. The air doesn't seem that large and if you show a steep landing it might give it more of a "wow check what he's going in to" feel. Also walk around and see if there's a better spot to shoot from (like high from the side) so as to show whats on both sides maybe. Is this a step up or a gap? I like your lighting even with the hot spot is seems natural and not out of context. Now if you shot faster and took out the ambient more I bet that hot spot will be a problem but you chose wisely to have the ambient roll in and be more a part of this. Nice work and keep shooting. Check out
www.sterlinglorence.com/ he's got it down to a science.