He was tried by court-martial for a now unknown offense and sentenced by Brig. Gen. Thomas J. Rusk to be reprimanded before the entire army on parade on the evening of June 27, 1836, and dismissed from service. He rejoined the army on July 5, however, as a private in Capt. George Washington Poe's First Artillery Battalion, and by August 1 had been promoted to quartermaster of the First Cavalry Regiment of the First Brigade, Army of the Republic of Texas. From then until November 22, 1836, he was stationed at Camp Johnson, on the Lavaca River.
Thereafter he returned to his plantation, where by 1840 he owned 2,952 acres. By 1850 his Grimes County real estate had increased in value to $1,400. By 1860 it was worth $11,000, and that year he reported $6,000 in personal property. His wife died in 1857, at age forty-nine, in giving birth to their ninth child, named Dollie after her mother.
Plaster served for several years as postmaster at Bedias, and after annexation he was elected to the First Legislature of the state of Texas. He died of pneumonia in Austin on March 27, 1861, and is buried in the State Cemetery. At the time of his death he was doorkeeper of the Texas House of Representatives.
30° 15.933, -097° 43.639
Texas State Cemetery