It doesn't seem as easy as you suggest just to redesign the entire website to fit a mobile phone screen. Boshing out a few images on photoshop is all well and good but it takes time to create a steady and working mobile site which functions well on all mobile devices/browsers. They had numerous databases to work on and pages to change and just because it works now doesn't mean it can be converted easily. A responsive design would be a better choice probably, just removing features just to fit the screen.
This said they are probably working on something already. Give them time.
Hmm, pie.







