http://www.nba.com/dleague/riograndevalley/roster/ Couple of familiar names: Alton Ford (Sr. or Jr.?!) and Smush Parker (ready to be called up?) Also glanced at the Toros roster and that shooting guard that DaDa was so enamored with is still with them: Ezra Williams if I recall correctly.
It just seems like an odd choice of a "prospect" unless they are "planning" on moving one of their rostered PGs. Also, I thought the NBDL was restricted to guys without significant NBA experience... Smush was a temporary starter in the league and has been on a couple of rosters.
This isn't baseball, the Rockets don't have any control over who plays for RGV. The Rockets can assign 1st or 2nd year players under contract to RGV - which obviously they haven't so far. However RGV signs most (all?) of its own players otherwise.
if i remember correctly Smush went late in the first round of that draft, so even the NDL teams don't have a lot of faith in him.