There's no relaxed sprinting, either you sprint or not, and Remco was doing a full sprint from what I've seen, especially when he saw he was gapping Roglic.Not that serious.
It’s sad this always seem to happen with those who are scrutinized the most, but Remco thought Buitrago was ahead and they were sprinting for second and third, so he was relaxed about one rider (skjelmose) overtaking him at the line as he thought he would have 4 bonus seconds. He thought Plapp was reeled in earlier.
Edit: I reacted without seeing other, similar comments later in the thread.
The boy is as usually full of ***!