The moment Sloth arrived there, he found lots of quarrels, and tons of attacks falling over the one hundred master group he summoned. And yet everything got shielded by a formidable defensive array that surrounded the king's tent.
It was something expected, so no long-distance technique of the enemy would land and take the king down.
Seeing Sloth coming out like this made everyone halt in their actions. He was still standing in the middle of the defensive array and was quite safe from the reach of anyone out there.
But that wasn't the main reason for everyone to stop, the most important question about the king's health was. Sloth kept claiming his ability to save the king and ended up meeting the king at last.
The ones who argued against this move from the start shouted next and pointed at him with a single word: Traitor! As for those who supported him before, they remained silent, and didn't know what they should do.