Actually a clever tactics is used by Hamza's legal team, which I hope is going to back fire on them big time.
They were asked to give arguments in favor of their bail extension applications. They were engaged in the arguments, but when they realised they don't have any valid arguments in favor of their bails applications, they decided to withdraw their applications.
Once their applications were withdrawn, Hamza didn't have the protection of the bail, therefore, vulnerable to the fact that NAB's arrest.
The judges didn't make the decision, but they were left with no choice after withdrawal of the applications. Strictly speaking the judges didn't give any decision against Hamza. They have no option but to dismissed the applications once his lawyer said they are withdrawing them.
The reason why his lawyer done that is to keep their bail rights intact. Now they are going to submit applications to the SCP on the grounds that they were not given opportunities by the LHC to present their arguments.
As a matter of fact they had the opportunities but didn't had any valid arguments to give.