Butch is right... The wind at Columbia is very fickle (although usually light and not a problem). In addition, the approach end of 17 sits behind some trees and a knoll and is somewhat protected. There is a wind sock right at the tanker base and it's not unusuall to see the wind sock and the tetrahedron pointed different directions as well as the awos saying something else. Also, Runway 17 runs downhill off a hump about 1/3 of the way down that tends to give you the feeling the ground is trying to drop out from under you.
The locals, flying taildraggers, will use 29 for most of the year and only abandon that runway when it gets too wet during the winter. The prevailing westerlies will normally favor 29. In addition the intersection of 29 and 17-35 can be hazzardous. When the wind gets shifty, you can watch the tetrahedron, at the intersection, swing from 170 - about 300 and back pretty quickly. Runway 29 has the benefit of hangars, trees and hill to the south that will lessen the influence of any southerly component at the touch down area, not to mention grass is sooo much more forgiving.
I rode my bike out to the area where Butch's beautiful M4 decided it had enough of the paved runway and it is a bit further north than I would have guessed. Most of the runway excursions happen a little more towards the intersection of 29 and 17-35. (BTW, Butch was able to miss the lights) I can say that last Friday afternoon (two days after Butch's incident) the wind was strong (10mph gusting to 15) and shifting. From what I hear, it was like that all week.
This incident completely reinforces my total hatred of pavement.
Mark