The Driver is responsible for controlling his car, Vettel made a mistake and failed to control his car. Vettel's car damn near took out Hamilton when it returned to and then crossed the racing line, Hamilton's reflexes allowed him to avoid t-boning Vettel, in the process of avoiding Vettel Hamilton was unable to take advantage of Vettel's mistake, how convenient for Vettel. The stewards got it right and Vettel deserved every second of the penalty.
Just my humble opinion and YMMV, and yes Hamilton has a hard time displaying any personality but there is no denying he is one hell of a driver.
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