Substitutes

[Just Curious]

With the changing rule of when subs can enter a game during free throws, one school is now trying to make more subtitutions after the second made free throw. Usually a time when one would only see a sub for the shooter... The coach stated reason was to slow up any potential fast breaks... I'm guessing that his team is very slow at getting back on defense . Anyway there is some controversy if this is legal.. Doesn't this negate what the new rule is trying to instill???
A 2nd question, along these same lines, can a substitution be made after any "made" basket?
jc