No.
Unfortunately against the vastly superior enemy in this case the optimum firing range with break formation was letal to the ships. If they had stayed together with the bases they would have survived and inflicted huge losses to the attacker. And tactical combat was not a reasonable alternative with a total of about 600 ships involved.
Strategy is defenitely something that should be improved for SE V.
"If a ship loses all weapons, it changes type to an unarmed ship and breaks formation. Unarmed ships always break formation, no matter what."
I think that could be the explanation Fyron. However it is not a reasonable thing IMO for an unarmed ship to leave the protected formation and fly into the fire of the enemy.