Frenchman caused controversy as he applauded Liverpool fans
The Frenchman returned to Anfield for the first time since he left Liverpool in 2004 on Monday, and after the 3-0 defeat stated that he would prefer to lose to the Reds than any other team.
He said: "If I have to lose 3-0, then I'd prefer it to be to them as I like Liverpool."
Houllier has won just two Premier League games since succeeding Martin O’Neill earlier this season, and supporters were left angered as their boss chose to applaud the Kop instead of his own fans on Monday night.
Krulak believes the supporters are right to voice their opinion and admits nobody knows what was going through the manager’s mind.
"Those who are looking for Gerard Houllier's head, who are asking that he be fired have the right to feel that way," Krulak said in a statement. "They buy the tickets and they can say what they want
"What I don't know is what was going through his mind at the time - and neither does anyone else."
Fans were also rumoured to be angered by the Frenchman’s nostalgic attitude towards his former club, touching the ‘This Is Anfield’ sign and thanking the Liverpool supporters for making a banner for him.
"Nor am I able to truly understand what he was feeling before, during and after the game, feelings that led him to make the comments he did. I am not going to try to minimise what he said, make excuses," Krulak added.