My $0.02 here, speaking as an ex-racer:
Tanner Hall is a decent skier for what he is: a park rat. But he's most daft to try and question the athleticism of folks like Bode and Rahlves, as they are top-level athletes (anybody watch the "Superstars" competition where the top two finishers were Bode and Johnny Mosely - both of whom schooled elite/pro track, NFL and NBA stars? Bode won walking away, it was no contest).
And to the poster who said "anybody can ski a DH course slowly": that's not really the point, is it? If you put Bode, Rahlves, Maier, Koznick, Kostelic or Paerson in a terrain park, they would hold their own just fine with the Tanner Halls of this world. Most ski racers spend an awful lot of time free skiing: hitting cliffs, mastering chutes, getting big air, skiing incredibly deep powder, slaloming through thick tree stands, etc. I remember skiing powder with Hermann Maier at Snowbasin, UT, after a World Cup traning run was cancelled. He was loving it, hitting every drop, cornice, cliff, and tree stand with reckless abandon on a pair of GS racing skis - it was fun to experience and to watch.
And mentioning Tommy Moe is a good start, but you should also look at the best in the extreme skiing world: both Jeremy Nobis and Wendy Fisher were world-class alpine ski racers before taking up extreme skiing. And Nobis is a demon on any kind of slope, terrain or snow. Plake started as a gate skier. Zach and Reggie Crist (the first skiercross "stars") both spent time on the U.S. Ski Team and were great DH and SG racers in their own right, which is a good part of why they ruled skiercross in recent years. And don't forget that Daron Rahlves has entered and won skiercross competitions against the world's best - even after a full World Cup competition season.
Tanner Hall may have a point with the money issue, but even that doesn't hold water in the grand scheme of things. Yes, freeskiing and park riding is big in the U.S., but it's not a big money sport for the manufacturers on a global scale. In Europe, the big sport in the winter is FIS World Cup Alpine Ski Racing, and the companies get a ton of broadcast time on TV in the EU nations. So it's logical that they try and treat the top racers well, as their equipment get a lot of TV time if they sponsor a winning racer (think of how much Rossignol is kicking themselves over the loss of Bode). There's little ROI in the EU on freeskiing, as it's not the same in terms of popularity and exposure.
You could also argue that folks like Tanner Hall are compelling TV in the way that car chases and Dennis Rodman are compelling: people somehow are drawn to the absurd and extreme, and aside from his backwoods upbringing, Bode isn't really a "media darling." If that's the case, then maybe Hall has a point. However, Bode walks the walk and lets his skis speak for him on the world stage. Hall, as mentioned earlier, has parlayed a "parlor trick" into 15 minutes of fame.
I side with Bode in this case - but didn't you expect that from a former racer? All that aside, if Hall could back up his case with facts - rather than conjecture - maybe he'd have a leg to stand on; right now, he looks like an idiot.