Araki made this suggestion not because he had gotten cocky.
It was because this was indeed a rare opportunity.
First, Namikaze Minato, Fugaku Uchiha, and even elite ninja like Ino-Shika-Cho were known to have already left the village.
Second, more than half of the Anbu were tied up dealing with Suikazan Fuguki and the others along the East Blue coast.
Konoha was already short on manpower.
If the Explosive Tag network spread throughout Konoha detonated at once, it would undoubtedly further divide the Konoha ninja's attention. With wounded people all over the village, they could not simply leave them to die.
That would naturally greatly reduce the number of guards remaining at the Hokage's side.
Of course, they would not recklessly force their way in.
They still needed to observe the movements of the other top-tier powerhouses first.
At present, Konoha had, at most, four and a half top-tier powerhouses: the Third Hokage, Orochimaru, Jiraiya, Shimura Danzō, and Uzumaki Kushina.
In a group battle, Araki and the others were naturally no match for them. But unless their luck was so terrible that Uzumaki Kushina sealed them outright, they would have no trouble escaping.
To be fair, Araki could not recall any Sealing Technique capable of preventing a summoned creature from being dismissed.
Perhaps the Contract Seal could accomplish that, but the Clam Clan was not like the Nine-Tails, with only a single summon. If one was forcibly dismissed, they could just summon another. It was no big deal.
Formations like the Four Violet Flames Formation or the Crimson Sun Formation had never demonstrated any effect capable of sealing Summoning Techniques.
After all, the Third Hokage had once summoned Enma from within the formation arranged by the Sound Four.
Therefore, they were not overly concerned about retreating.
Since they would not