Originally Posted by
Kralljin
I don't read anything about "Honor the people of the horde" or "Every member of the Horde is equal".
Vol'jin and Baine view Garrosh as an Oathbreaker because to them Horde was just more than a political Alliance, Garrosh betrayed those ideals that Thrall, Vol'jin and Cairne forged together, to look after the other Races of the Horde and treat them as equals.
Garrosh only treated Orcs good and used the rest as Cannon fodder, hence Vol'jin saw his Ideals and people endangered.
But from a rational standpoint, the rebels clearly go against the following line:
They aren't following their Warchief's command, hence they broke the oath.
It's a tricky question but it's similiar to the Oath of the Wehrmacht, Hitler made himself supreme Commander of the German Forces and the Wehrmacht swore an Oath to follow and protect Hitler, not the German people.
If you were going against Hitler, you basically broke your oath.