I stumbled upon a site that looked at team efficiency. This site is different from others in that it can show how good a team is in efficiency at home versus on the road.
For the season, the Blazers play at a slow pace. This is true wherever they play, which is good sign since is shows that the Blazers set the pace of the game. However, the change in defensive effeciency (points allowed per 100 possessions) is frightening. The Blazers are the 8th best defensive team at home but the 26th best defensive team on the road. A difference of 9.3 points per 100 possessions is almost the difference between us and Minnesota.
As a young team, I'm guessing this isn't that much of an oddity. It will likely be corrected in the future and whatnot. I suppose the good news is that this team is already very capable of playing strong defense without Oden...or any defensive rebounds in general.