That is a misrepresentation of his orders, and you know that. Shame on you.
Really? Here's what his orders said:
But you are to hold possession of the forts in this harbor, and if attacked you are to defend yourself to the last extremity. The smallness of your force will not permit you, perhaps, to occupy more than one of the three forts, but an attack on or attempt to take possession of either one of them will be regarded as an act of hostility, and you may then put your command into either of them which you may deem most proper, to increase its power of resistance. You are also authorized to take similar defensive steps whenever you have tangible evidence of a design to proceed to a hostile act.