I'm sure Salazar's athletes are embarrassed by his complete over-reaction to some totally normal competitive "race craft".
The fact Bumbalough got DQ'd having not done anything proves Salazar and the officials totally lost the plot.
It's all really pathetic when everyone who's ever competed in track or watched a lot of racing knows full well that team tactics (e.g. El Guerrouj without much subtlety using a rabbit, the fierce rivalry between Kenya and Ethiopia), using your elbows to keep your line/space, bumping/little pushes when space gets tight, trying to keep people running wide or stuck on the inside, spurts of pace to keep a rival from passing e.t.c. are all normal and unavoidable parts of racing.
Generally athletes are DQ'd when they show total disregard to a fellow athlete e.g. Kemboi pushing Kipruto off the track last year. People are DQ'd when an obvious foul has occurred that's affected the result of a race, or someone falls over because someone carelessly took them out.
I've seen races with much more bumping e.t.c. going on than any of the races that Salazar had a problem with and no one would have been DQ'd. E.g. the Spanish mid distance guys used to be ruthlessly physical at the European indoors in the late 90's/2000's.
Rupp showed the right attitude and kept out of trouble and got second, nothing for Salazar to complain about, least of all shout at poor old Lopez Lomong.
Bonkers.