Texians during that period could do anything - they built a Nation - just like their American revolutionary brothers in arms. You just have to understand their point of view. They never paid homage to any rank and considered themselves equal among all men in all regards - including war. "Following the slaughter at the Alamo and the massacre at Goliad, war in Texas became a dirty, savage pursuit, unrestrained by codes of "professional courtesy."
Discipline grew even worse after San Jacinto. Old settler Noah Smithwick reported "the only officer who ever had the temerity to try to enforce strict military discipline, paid for his folly with his life."
The Texian volunteer was independent, insubordinate, disorderly, bedraggled, and unprofessional. They were an officer's nightmare. He did not fight for procedures, politics, or pay. His reason stood over the hearth cooking game he had bagged; his reason napped in the crib he had crafted; his reason grew in the fields he had cleared and planted. Because his imperatives were so personal, he zestfully slaughtered any who threatened them. A consummate individualist, he did not want to belong to any establishment - a military establishment most of all. Still, he demonstrated wonderful initiative and marksmanship, as well as remarkable physical courage. A Jacksonian egalitarian, he mirrored both the vices and virtues of his age". [Stephen Hardin, The San Jacinto Campaign]
The Texians never formally surrendered after the Civil War.