As I already said in another thread: I have several doubts with the theory.
But I believe that Sherlock has to be dead in the eyes of his enemies - and John. I agree that he would have wanted to go with Sherlock and that he couldn't pretend to mourn. I think that "liberty in death" of THoB was a hint to this events. That Sherlock could only act freely if he wasn't in the spotlight anymore.

Avantasia - The Seven Angels

You've been fighting for your soul
And sometimes it takes a toll
Hope one day you'll understand
What it means to hold in hands
What they call a fantasy
It is nothing but a key
To the world that now you're in
That they call a wicked dream

I’m not quite sure, whether it is the right theory or not.

First I felt perfectly alright with it. After TRF I had my own theory and the last one fits it quite well, so my first reaction was something like “Yeeeesss, I was right!” without further thinking. 

After a little while I admit that my theory wasn’t totally right. I didn’t see the airbag and the snipers being called off in it.

And now after some thinking I really have several doubts:
- Why does Sherlock call Anderson “Philip”? From Sherlocks point of view there is no need for (faking) appreciation/closeness. Anderson would have filmed him anyway due to his new-found devotion to him.  Later Sherlock called him Anderson again. So it might be only a wishful dream of Anderson.

- I did believe Moftiss when they said that all clues were in the whole series. But there was no sign for the airbag or that the sniper was called off.  In TRF it was quite the opposite: here the sniper focused John and then slowly packed up his belongings. No sign of threatening. Why should they have lied in TRF? But I have to admit that I have a problem with “John’s” sniper at all. How did he know that John comes back to St. Bart’s? For me there must be another one.
And to the airbag: I can’t really believe that something so big can be transported and removed unseen.

- Somewhere it was said that they filmed the second season reversed (from 3 to 1) to make no logical mistakes. But I see no relevance for this in this “solution”.

And all in all I’m a bit disappointed because of Sherlock’s brief comment that he had the upper hand in the conversation with Moriarty. But here I’m hoping for season 4…
 

Hi there!

Another girl from Germany...
I'm Phoenix and I'm 28 years old. I started with Sherlock some time after the airing of the second season but then I watched the BluRays in a whole (and several times after that... Yeah... Quite addicted... ). I regret not being part of the discussion after the second season but it seems that not all questions are already answered.
So I'm looking forward to many interesting discussions!

Phoenix