Yes, our dear Aceto first says "It's a private matter, I rather not talk about it "... 
But as soon as the cat peaks a bit out of the bag, that both Martin and Bonack saw Derek cramping and passing, Aceto fears his reputation as a coach is on the line, then he decides to explain that Derek wasn't almost dying " but rather was "panicking here and there "
WooSSHHHHHHHHHHHHHHH