Can Usain Bolt Run Faster?

A statistician recently analyzed Usain Bolt's 100m running time and concluded that Bolt can easily cut his world record from 9.58 seconds to 9.44 (thanks to Simply Statistics for the link).  The author recently concluded that there are 3 easy ways for Bolt to achieve this improved time:

1. Start faster out of the blocks
2. Run in advantageous wind conditions
3. Run at high altitude

I don't consider #2 and #3 to be relevant, as these are out of the athletes' control.  Like other athletes, I assume that runners choose which meets to peak at, and most will peak at the Olympics and the Olympic trials this year.  That doesn't leave them with control over the venue or the weather conditions.

I think it is pretty well known that starting is Bolt's largest weakness, so I am sure that he is trying to improve this weakness.  I'm not convinced that this is as easy as the author makes it sound.  Being the best sprinter and having better starting reflexes than his competitors is not the same thing.  Plus, if he can easily beat everyone without risking a false start, why not?  This would be like telling Phil Mickelson or Tiger that they will win a tournament if they hit the fairway with every drive and don't miss a put inside 10 feet - which is a lot more difficult than it sounds.