While Thomas didn't have the patience of Job, he must have had something close to it. He spent the first three years under the command of the three of the slowest of the slow. Those were Henry Halleck, who took something like three months to march his army twenty miles from Shiloh to Corinth. Then he moved on to serving under DC Buell, who was very much of the McClellan school of warfare, or the "the slower I move, the less likely it is I will fight a bloody battle". And if these two weren't bad enough, Thomas got stuck fighting under William Rosecans. Somehow I doubt that if Thomas could put up with these three that George McClellan himself would cause
Thomas to either request a transfer, or stick his foot in his mouth.
Unfortunately, Thomas probably also wouldn't say anything that would insprie Lincoln to remove McClellan any earlier either. If however Thomas earns a reputation in the East, and does his whole rock thing at one of the Manassases(what is the correct plural of Manassas anyway?) its likely that instead of restoring McClellan, Thomas might get the command just before Antietam.
Which is an interesting prospect, as Lee and Thomas had served together before the war.
Thomas comes across to me as a man very much like Lee himself. He was a man of duty and honor who didn't care for politics and suffered in silence. He was a slow deliberate commander himself but would he, when realising that McClellans army was the most prepared of any union army of the entire war to crush the ANV, become frustraited and annoyed with the Virginia Creepers ridiculesly slow progress?
I dont believe that Thomas would have complained to anyone of high rank or in any position of power. He may have complained to officers beneath him in his own chain of command.
Perhaps if Thomas had been present at the second Manassas and held his posistion against the combined attacks of Stonewall and Longstreet as the AOTP retreated from Virginia then his stock may have raised higher sooner and perhaps he would have taken control after Antietam and McClellans failure to capitolise but would Abraham Lincoln and the politician in Washington become frustraited with his slow and diliberate apporach?