I'm sure I could correct the hue, if I bothered doing any PP after the HDR creation, but I didn't. For the most part I like how they turned out and, for now, have decided to let them stand as is. Maybe some day I'll go back and tweak them a bit more after I get Aperture.
As for the wide angle stuff, that's why I said it, I know it's from being at 14mm. But the thing that really surprises me is that there is built-in correction for it in the camera and/or RAW files. iPhoto has the photos at 4000x3000, which is the listed res of the camera, and things look straight, when viewing the RAW and camera created JPGs. But I used the RAW files in Luminance HDR, the resulting images are 4016x3016 (or close to that, I can't remember now if it's 16 or 13), and you can really see teh wave from the wide lens.