Most likely bandwidth issues.
Ironically, it was Dish's CI package that pushed DirecTV customers to lobby hard for dual feeds and more HD content. At the beginning of the season Dish had the advantage but now DirecTV pretty much airs everything uplinked whether it be a second or HD feed. I haven't missed any of my Wings broadcast team on the road (except for one or two early in the season) and they are even showing some road the HD feeds when FSN-D takes their HD show on the road. Quite a change from last year. Yeah, for those who moved to Dish to get the dual feeds or more HD, it ain't their year.....or, 18 months to be precise. :dev