[Non-Sequitur]

He turned it over to the state authorities of Texas. His action even had the support of Governor Houston.

Twiggs wasn't under the command of Governor Houston. He had no authority to dispose of any federal facilities without the approval of Congress.

[GOPcapitalist]

Twiggs wasn't under the command of Governor Houston.

Nope, but the state militia was and Houston told the state militia leaders to arrange for the peaceful transfer of federal facilities in Texas into state hands.