I've a question but before I begin I think it important to say I'm not
entirely sure that this article site is completely accurate.

I do agree with a lot of what it has to say.

1.7 The fall of the citadel (End of Half-life2)

"GMan tosses his pawn back into stasis. He abandons Alyx, left to be
incinerated by the Combine portal explosion. Gordon is now in
hypersleep, as he has completed his job, and he is no longer needed. Or
is he? It seems a group of purple Vortigaunts think otherwise. They warp
in, rescue Alyx, and transport her outside in front of the Citadel. They
pull Gordon out of stasis, and transport him to a location near Alyx.
Both of these things happen against GMan's wishes."

Do you agree with this. He says the saviour of Gordon and Alyx is
against Gordons wishes but at the beginning of EP1 G-Man is clearly
heard to say  "We'll see about that" to the purple Vortigants. I think
they're collaborating, if he himself is not one of them incognito.