“It was one thing to include [Eccleston] among all the other archive Doctors, as they flew in to save…”
“It was one thing to include [Eccleston] among all the other archive Doctors, as they flew in to save the day — in fact, it would have been disgraceful to have left anyone out — but placing him in that scene might have given the impression he’d actually turned up for filming, which would have been crossing the line.
Not taking part in the 50th was a difficult decision for Chris, taken after a lot of thought and with great courtesy, and not respecting his wishes would have been grossly unprofessional and disrespectful to a good man and a great Doctor. Number 9 may not have turned up for the celebrations, but there would have been no party without him.”
– Moffat Explains Short Hurt to Eccleston Regeneration | Doctor Who TV~~This is a syndicated post~~