The unexpected suicide bombing had put the Zerg Race at a sudden disadvantage, but the arrival of the Zerg Queen had reversed that situation. The commander was forced to endure the detonation of the suicide attack since he was unable to leave the Hive Star's primary entrance.
Cid Warlock was surrounded by soldiers and subordinates who were prepared to die in order to preserve him. The explosion was about to take everything that both targets could handle.
But who would expect Queen Titania to come out of the Hive and leave the protection of the Zerg King to the Royal Guards? The Queen of the Insect Race's only duty is to protect the Imperial Palace and the Zerg King. As for fighting wars and battles, only the generals and soldiers of the military do it as a duty.