Even in the unlikely event of the stop switch being a fake, the dragon golem will apparently take time until it starts to move once again.
As consequence of excessively using the breath attack against an unexpected enemy like us, it ended up squandering its mana in one go and thus coming to a standstill.
And yet, after attacking with all its power for half a day, you could definitely call this golem a nasty weapon as well.
“As for the occasionally arriving intruders, I guess it finished them off in a single breath attack up until today. If it’s one shot of the breath, the necessary mana can be saved up within a few days, too.” (Burkhart)