I don't think so. I remember way back in the times of NBA Live 97 there was supposedly a way to shoot free throws Ricky Barry style, but it was a fake. Most cheats/tips/codes sites still list it in their archives though.
mmmm come to think about it you are right.....i remember playing those games in Playstation only.....the nes and pc version i didn't bother to try, since that freethrow move rarely scores