Hardy's in-game management has always been pretty suspect. Not missing the second free throw with 0,9 left, up by 2 is a fireable offense. Just idiotic, incredibly stupid. And that's 0 % on Lauri with Hardy shouting to him "MAKE IT!" just before the free throw. And no, that wasn't some 4D chess tanking move, just extremely bad coaching.
And then he tells the press multiple times "the end didn't matter, it was all about our D on Booker". Yeah, sure, that was the biggest thing, but you just lost the game for your players.