Guus Hiddink made himself "unapproachable'' at Chelsea for two days because he was so angry at the "injustice'' of their Champions League exit to Barcelona.
The Dutchman was so frustrated by their semi-final knockout staff inside the club were forced to keep their distance from him.
Hiddink says he felt "exhausted'' by the defeat and did not want to be bothered by anyone for two days afterwards.
Chelsea had four penalty appeals rejected by referee Tom Henning Ovrebo as Andres Iniesta scored an injury-time away goal to give Barca a place in the final against Manchester United.
The official was then confronted by an angry Didier Drogba after the game.
The Ivorian striker's foul-mouthed rant at both Ovrebo and the TV cameras could still be punished by UEFA but, in the days after the defeat, Hiddink's exhaustion made it hard for staff to be around him.
"What happened against Barcelona exhausted me,'' said Hiddink. "For two days, even normal questions drew a reaction from me after that, and that was because I was exhausted.
"I knew that I didn't want anyone coming near me. I was angry because you felt injustice. Everyone felt that, even people recognised it who weren't involved with Chelsea.
"You feel this huge frustration. I was frustrated when we (Holland) didn't get to the World Cup final in 1998 when we lost to Brazil in the penalty shoot-out, but that was to a good opponent.
"That was frustration because we were disappointed. I could not be angry with the referee or the opponents who took the penalties.
"I didn't apologise to people but they kept their distance. It's not a nice quality from myself in these circumstances, but they stayed away for two days. I don't have to apologise for not talking to anybody.''
Hiddink revealed there has been no contact between him and UEFA over the events at the end of the game against Barcelona.
However, the Dutchman believes the "football people'' in UEFA will understand the reasons behind the anger of his players.
"I have not had any communication with UEFA,'' said Hiddink. "What we felt comes back every now or then as a flashback.
"And, when the final is played on the 27th, I will have my mixed feelings as well because we are not there.
"Not being there on that date, on that stage, will hurt because of what has happened.
"The people involved apologised about their too long and too strong reactions but, in general, I felt in the past, in principle as a player, some anger when you are facing injustice.
"I can understand that. The real people, real football people with football hearts, within UEFA will understand that as well.''