If you wan't to look at a team that might be cheating at home, look at the Seahawks.
5-0 at home, 1-5 on the road this year
From 2003 to 2007 the Patriots have an 86% home winning record, the colts have 81%
On the road, Colts win 73% and the Patriots 72%. The two best at home are the two best on the road, when you see a team like Seattle have such a large discrepency you can get suspicious, even if you adjust for the opponent, Seattle lost to MIA, DET, ARZ, STL and SF with the only win against CAR on the road. At home they beat GB, NE, NYJ, MIN, DAL.