If this is true, it shows that Moffat doesn't pay enough attention to his own show. In The Angels Take Manhattan Eleven donates some regenerative energy to River. And in Nightmare in Silver, he threatens to regenerate in order to thwart the Cyber-Planner. How can either of these be if he's on his last freaking life???!!! Ridiculous, just ridiculous.
Not to mention he seemed to think he could regenerate again in Let's Kill Hitler, and I doubt he would bluff when talking to his own Tardis.
And yet he couldn't regenerate there to save his life.
