Something wrong with De La Hoya?

When I watched the Dec. 6th fight with Pacman, I noticed something different with Oscar. I know a lot of people were saying he was weight drained and what not. However, I don't know if it was just me, but he looked worried and discouraged before the opening bell. When the fight was first introduced, I disregarded the weight difference because I knew Manny's speed would give the Golden Boy problems. I don't like the idea of make excuses, because Manny beat him no problem. Yet, why would Oscar fight at 147 lbs at 35 years old? He walks around at 160-165. Also, do you think he will fight again? I know he "retired" in April. I have this weird feeling he will come back. Chavez Jr was saying how he wants Oscar. I personally think Oscar at 154 would school the young Chavez. A third fight with Mosley would be sweet, but I don't see this ever happening. Plus would probably beat him at this stage(even though Oscar schooled him their second meeting). Just want to hear your guys thoughts.