Sonny Bill Williams said former coach Steve Folkes was at the centre of his decision to abandon the club to take up a rugby contract with Toulon.
Williams told Channel Nine's Footy Show , which airs tonight, that Folkes's questioning of his friendship with boxer Anthony Mundine earlier in the year had angered him.
"I rock up to training and Folkesy, Steve Folkes, someone, that to be honest, has never paid any interest in my personal life, he comes up to me and starts saying: 'You're not turning Muslim are you?' " Williams said.
"I just laughed. I said, 'Seriously you are joking' and then he has a go at Anthony: 'You're kidding yourself if you take advice off him.'
"I start to think: 'Who is he to question my friends?' "
"Who does he think he is? Does he think he is God? Is he God or something?"
Williams went on to say he simply wasn't happy at the club.
"Obviously to do something like that [leave], I wasn't happy," he said.
"I haven't been happy at the Bulldogs for a while."
Folkes told News Ltd Williams's comments counted for little.
"He will do anything now to try and justify this decision, regardless," Folkes said.
"It is indefensible. I was in the room last year when he agreed, shook hands and signed a deal to stay with us for five years.
"So regardless of what he says now, it's all pissing in the wind really."
Meanwhile, Mundine has arrived in the south of France to help the former Bulldogs star settle into his new rugby union career.
Mundine watched his mate go through his paces during an afternoon training session with his new teammates at Rugby Club Toulon.
After about two hours sweating it out on the field in blistering conditions, the 23-year-old New Zealand international left the training ground with Mundine in a club car.
Mundine was tight-lipped about his reasons for visiting his friend on the Cote d'Azur.
The boxer, who like Williams used to play rugby league before switching sports and has publicly supported his decision to flee the Bulldogs, said he planned to spend at least a few days in France.
When asked if he would attend the Top 14 club's first pre-season friendly match tomorrow, Mundine said "probably".
The Muslim boxer is believed to be one of the few people who knew about Williams's decision to walk out on the Bulldogs last month despite being just one year into his five-year contract with the Sydney club. Common sense to leave: Williams Williams said his decision to walk out on rugby league to take up a big money deal with Toulon came down to "common sense".
"If a lawyer, if a teacher, if a bus driver, if they're on $40,000 and they get offered a lot more to go somewhere else, what do you think they're going to do?" Williams told Nine.
"Are they going to change bus companies? Or are they going to sit there and say, 'All these people want me to stay here because I'm the best bus driver in the jurisdiction, blah, blah, blah.'
"It's just common sense."
Williams also reveals he has serious concerns about the NRL and hopes his move will act as a catalyst for rugby league players to get what he believes they are entitled to.
"Hopefully some good can come out of what I've done and it wakes everybody up and they realise that something needs to be done," Williams said.
"What I've done, it's shown it's just not about me, it's about the boys getting a fair go. You know what I mean?
"It's about them having the balls to stand up for themselves and get what they should be getting.
"Because if we're going to be getting treated like that, why can't we treat the clubs like that?
"I just want to see the game and the players looked after the way they should be because the crowds don't turn up to watch David Gallop play ... they turn up to watch the players play."
The Bulldogs and the NRL will begin their lawsuit against Williams at 10am tomorrow, when they seek an injunction to stop him from playing with Toulon.
AAP