It’s all down to the chronology, apparently, and as The Grand Moff points out, the US writers strike prevented him from working on any US based productions.
"In fact it was already in the works," Moffat said.
"The strike just meant that I was unable to finish my work on the Tintin films given my new commitments."
Nice to get it all cleared up – fans of Tintin will no doubt be rueing their luck and hoping that a suitable replacement for Moffat turns up.
Mr Moffat told the BBC that "nothing less than Doctor Who could have torn me away" from Tintin, which he described as a "stunning project" he was "proud" to be part of.
But it was "the proper duty of every British subject to come to the aid of the Tardis", he added.
Damn right! But what of Steven Spielberg’s fondness for Doctor Who which in tabloid-land dates back to the early 1990s?
Well, Moffat described Spielberg as being "very patient and understanding about the situation, despite the problems it created", but that Peter Jackson is the award-winning director that is a Doctor Who fan, not Spielberg, who simply "knows and admires the show".
Also of interest however is the lead casting of Tintin – it’s young Thomas Sangster, better known as John Smith’s pupil Tim Latimer in season 29’s Human Nature!