on that hell bent ending

And does the Doctor remember or not debate, at least we know what was in the script:

As the tune swells, she takes her last look, and goes out the
door. It shuts behind her.
– and then we hear the grinding engines of a TARDIS.
The Doctor spins. What,
what?
And the whole Diner fades from around him, leaving him in –

CONTINUED:

And standing facing him – left behind by the parting
TARDIS/Diner is the police box shape of his own TARDIS.
He stares. And stares and stares. Not just at the box, but at
the mural still painted on it. He kneels by it, puts his hand
to –
– the painted face of Clara.
Oh! It was
her!
On Clara’s face we –