Klaus's opponent gaining the advantage did not give him the chance to get back into the fight. Even when Klaus tried to get help from Alice and Reynolds, he realized the duo were fully preoccupied. Hugh was also having an intense battle against the Fifth stage Sovereign he fought with the last time. There was no way anyone could assist him against the silver robbed Gnome. He was lucky the Gnome's Puppet had been destroyed from their first clash, else he would have been in a precarious situation.
He focused fully on defending, taking one attack after another from the Gnome. With each attack, he was forced to retreat a couple of steps from the impact of the attack. His ice wall was barely able to block the Gnome's persistent assault.
