Certainly Haskins was an influential and significant figure, and a legend at TWU/UTEP, but I always thought the deal about "breaking the color line" has been a little bit overdone -- Phil Woolpert at USF a decade earlier won back-to-back NCAA titles playing four or five black players, and I'm pretty sure the great Cincinnati teams from 1958-62 played a lot of black guys (primarily Oscar Robertson), so it's not like blacks hadn't been allowed on the court before.
But to stick it right in the face of UK (more so than Rupp individually) and all-white southern basketball kicked open the doors for good. Supposedly Bear Bryant saw that game, as well as Michigan State's juggernaut football teams of the mid-60s (heavily stocked with black players from the South), and said, "holy ****, if we don't start recruiting black players, we might as well hang it up."