There's clearly history within the team that goes beyond what Bernardo did that day. Bernardo was being a prick, but it sounds like Andone has plenty of previous on that front, and we probably just saw the culmination of it.
My guess would be that Andone was pissed off at the time, and then probably absolutely bloody furious when he saw it. Its actually worse than I remember having first seen it. Andone would know he's getting his first start of the season, and in the warm-up he gets a hefty boot on his calf from a...