Its his family claiming it was just a convo with Brooke and Cameron though. Personally I think hes had another huge blowout and insulted a fair few people at once (hence..I wouldn't want to insult someone about race, gender, sexuality or religion, which is quite specific really), in drink again, he is a terrible terrible drunk. The family will obviously play it down and try to make out its an unfair removal and that. But there is no reason for him to be ejected this late in the show unless it was fully deserved. They would fight tooth and nail to keep him there knowing how much money he would bring in once the voting switched to vote to win.
If it was just a random comment, then my prediction is calling Tomasz a homophobic slur. Or maybe even calling Brooke a dyke. I know some lesbians don't mind that, but a lot do due to the abuse they receive.
Whatever it was though, the many Lewis stans on facebook saying BB has kicked him out for nothing, all a conspiracy, just because production just hate him are being ridiculous. Production care about bringing in cash, nothing more, and removing him at this stage will have lost them a lot of money. For no reason. After they have bend over backwards to make sure he stayed there until the vote to win lines opened too. He had a lot of fans, but he had a hell of a lot of people who disliked him too. Hence the need for attempting to switch the format to vote to save as soon as it became clear he was in danger, 'Cameron decides who is evicted' followed by positive noms. Quite transparent really. And Lewis went and blew it off not being able to zip it for another week. Bet he is kicking himself now, 100k down the drain.