There are no excuses for that type of behaviour if what I have read is accurate.
Fans like to see their players celebrate even if they are sometimes exaggerated and over the top.
you do know the majority of fans BARELY celebrated at all? they just gave a small cheer and clapped. like it was Golf.
the goalscorers didn't celebrate (bar Morrison where he put his arms out for 2 seconds), the players
walked to each scorer and hugged and high five'd and all that, not many smiled. Saido wasn't alone in this, but because he scored 4 his face was on screen.
In the way the team reacted to the game and to the goals, I think this was seen as a glorified training session. Which, in the end, it turned out to be.