LOL, for some reason this instantly reminded me of "why doesn't Roddick play agressive with his FH anymore" topic.
Seeing what's wrong with his game is only one part of the equation and I'm sure he and his uncle realize what he needs to do, however what he does in training is one thing and what he does in an actual match is another, especially if his confidence is damaged a bit(which might be the case given his numerous losses to Novak this year).
I don't think coaching is the main problem, there's only so much a coach can do for you.
But they should be linked somewhat. Why does Nadal follow through across the body in practice a lot and almost not at all in matches? What is the explanation for this? He is practicing a shot he rarely plays in actual matches.
I think coaching is the problem here because they have not changed anything in his game in the last 7-8 months. Since early 2011 certain parts of Nadal's game that were firing in 2010 started to faulter, slowly but surely. Because Nadal was making SF and F regularly they overlooked it but was exposed again and again by Djoko and then by others. See declining serve, increased passiveness(even for a defender like Nadal), BH going downward, NOT BEING ABLE TO HIT THROUGH THE COURT with the lasso forehand(especially when that and ONLY that is being used in matches) anymore(for whatever reason).
They saw Nadal going steadily down in the claycourt season and they did nothing. With a bit more attention, 30 year old Fed could have beat him in RG.
They saw the beatdowns he got in asian swing and did nothing for WTF.
The point is that the Nadal camp isn't helping Nadal because from their statements, they plan on not changing much,even as the tour is passing Nadal by:
-Djokovic beat him on three surfaces convincingly with THE SAME PATTERN.
-Murray pushed him a bit on clay and IMO should have won the WB match but crapped his pants. Murray bageled him in Tokio with Nadal winning 4 points last set.
-Fed pushed him hard in Paris(and we ain't talking about 2005 Fed here) and just bageled him yesterday, with Nadal having 4 winners.
-more and more people are closing the gap on clay, Nadal's foothold on the tour.
I'm not saying that Nadal SHOULD be beating x and y all the time but his game, regardless of results, has been seriously lacking and this isn't a new thing. What's worrying is that his team is not adressing these issues or if they are, they are doing one weak ass job cause it doesn't show in the matches.