Turns out, HBO wasn't too amused by the fact that Games of Thrones showrunners David Benioff and D.B. Weiss used a prosthetic head resembling former president George W. Bush for a scene from episode ten of the first season, when King Joffrey is forcing Sansa Stark to look at the decapitated heads of her father and former handmaiden upon spikes on a castle wall. According to Benioff and Weiss in the DVD commentary, the head just to the left of theirs was Bush's, and they used it because they "had to use whatever head we had around."
In a statement released to io9, HBO said:
We were deeply dismayed to see this and find it unacceptable, disrespectful and in very bad taste. We made this clear to the executive producers of the series who apologized immediately for this inadvertent careless mistake. We are sorry this happened and will have it removed from any future DVD production.
Additionally, Benioff and Weiss released their own statement of apology:
What happened was this: we use a lot of prosthetic body parts on the show: heads, arms, etc. We can't afford to have these all made from scratch, especially in scenes where we need a lot of them, so we rent them in bulk. After the scene was already shot, someone pointed out that one of the heads looked like George W. Bush.
In the DVD commentary, we mentioned this, though we should not have. We meant no disrespect to the former President and apologize if anything we said or did suggested otherwise.
So, guess he won't be considered a technical guest star after all.