I'm gonna cherry pick a bit here but it seems that if the section I took is not true then the rest is unreliable.
All the stars travel at the same speed? Rediculous. Even if I accept (I don't) that all stars somehow are born to some specialized universal program that dictates all stars begin life at X velocity. The stars are all subject to differing circumstances; location within their galaxy, orbital bodies causing drag, other suns and gravity wells. The stars do not travel at only one constant velocity, whether calculated relatie to each other or relatvie to a specific point in space.

I think he was more saying something along the lines of: consider all the stars that lie on a certain circle centered at the center of the galaxy - if you take the average velocity of all of those stars, it won't depend on the size of the circle. Basically, that velocity is independent of radial distance from the center of the galaxy, although there's no doubt that there's variation here and there -- in other words, the variation that does exist isn't dependent on distance from the center.
But...regardless, looking into the matter a bit further has convinced me that he actually is wrong on this one. Looking into it further, I've also found what seems to be the accepted answer for the problem:
http://en.wikipedia....ity_wave_theory. There's a few links at the bottom that show some non-theoretical evidence for the theory -- or, at least, the abstracts.
Via google I could only find that creationwiki doesn't believe in the theory:
http://creationwiki....llions_of_years. I guess I'll respond to what they say:
First of all this is a theory not a proven fact. Furthermore, it does not come from first principles, but is simply the latest in a series of theories designed to save the long age theoretical system from reality.
Their first sentence is a misunderstanding of scientific terminology. Secondly, not all scientific theories come from first principles, and there's no problem with that. When theories explain stuff and are experimentally verified by other stuff, it's a good theory.
While, when properly tuned, the Density Wave Theory can produce the basic spiral shape, Hubble images of Whirlpool Galaxy and others show that they are too tightly wound near the core to be explained by the Density Wave Theory. On the other hand the Windup Model predicted this tight winding perfectly.
Their references for this claim didn't make this claim, so I dunno what their source is.
This is just one of several problems with the Density Wave Theory.
The development of a theory isn't equatable to the flawed-ness of a theory.
This is gravitational dynamics with the proper assumptions made. The Windup Model also produces spontaneous spiral configurations in computer simulations based on gravitational dynamics, but with fewer assumptions. It also produces the observed spiral structures from first principles, and in perfect detail.
I couldn't find what the "windup model" is anywhere. It wasn't on google and it wasn't even on the creationwiki site..
So, there is
something to what Humphreys said, but it seems to be far from incontrovertible with an old universe -- and in the same way, it doesn't necessarily point to a young universe.