As the lockout continues to drag on, Bolland on Friday reposted a Twitter entry that read: "can I get a RT for wanting Bettman dead?"
The retweet later was deleted.
"It was a mistake, I never meant to retweet that out," Bolland told ESPN.com's Pierre LeBrun. "I like to retweet for a lot of my fans, and I just retweeted the wrong thing. I feel bad about it."
It's not the first time controversy has found Bolland. In a radio interview last year, Bolland referred to Daniel Sedin and Henrik Sedin of the Vancouver Canucks as "sisters" and the city of Vancouver as "weirdos."
The Twitter development also continued a trend of apparent ire with Bettman, who is overseeing a lockout for the third time since he became commissioner in 1993. The last lockout forced the cancellation of the entire 2004-05 season.
On Friday, the NHL announced another round of cancellations, wiping out all regular-season games through Dec. 14, as well as the All-Star Game in Columbus, Ohio, originally slated for Jan. 27.
The lockout now has cost the league 422 regular-season games -- 34.3 percent of the season -- as well as its regular-season marquee events; the annual Winter Classic was canceled earlier this month.
There are no new labor talks scheduled.