Republic of Ireland assistant manager Liam Brady has claimed Sepp Blatter has become a "loose cannon" and "an embarrassment to FIFA".
Ireland were beaten by France in their play-off by a goal that should have been disallowed due to Thierry Henry's handball and FIFA president Blatter this week revealed that Ireland were bidding to be installed as a 33rd team at the World Cup.
Brady claimed the Football Association of Ireland, having already had calls for a replay rejected, had expected FIFA to consider the '33rd team' request in private, rather than go public with it, and he expressed dismay at the way Blatter has dealt with the saga since Giovanni Trapattoni's side were cruelly knocked out.
"He's a bit of a loose cannon," Brady told Sky Sports News. "He's an embarrassment to FIFA."
Explaining the decision to approach FIFA and ask to be included in the World Cup draw, Brady revealed the FAI knew the request was likely to be dismissed.
He said: "I think when we asked for that we knew there was very little chance of that happening. We asked because we wanted to have them respond in a measured way, and see what they had to say.
"After all, Mr Blatter was responsible for the (match) official. He didn't say anything about the appalling mistake the official made to miss a blatant handball."
Brady also praised the Ireland team and supporters for keeping their cool after the misery of losing out to a goal which should have been disallowed, and said FIFA should have praised that sporting attitude. "I think my country deserves more recognition from Blatter," Brady said.
The former Republic midfielder was shocked when Blatter told a news conference that the FAI's appeal had been lodged with FIFA.
"I'm afraid Mr Blatter is a law unto himself," Brady said. "I thought it was very disrespectful how he presented this fact. He's currently ignored most of the controversial things that went on that evening. He never had anything to say about that at all, like Henry's behaviour after scoring the goal and how that stands within his campaign to have fair play within the game.
"Henry celebrates as if he's done nothing wrong. Is that fair play? Hardly, but Mr Blatter chose to talk about the request to be considered as the 33rd team.
"People will be watching Mr Blatter closely and his decisions closely from now on. Of course England will have a lot to do with it because they're trying to get the World Cup in 2018 and Mr Blatter will have a big say."