The Nov. 10 tweet in question is part of an ongoing tussle between Simmons and the afternoon team on WEEI radio in Boston: “Hey, WEEI, You were wrong, I did a Boston interview today. With your competition. Rather given them ratings over deceitful scumbags like you.” That would be the same WEEI that a month ago partnered with ESPN (NYSE: DIS) to carry ESPN Radio overnight and on weekends.

ESPN.com Editor-in-Chief Rob King explained in a blog post (via http://www.mediaite.com/online/bill-simmons-suspended-from-using-twitter-under-espn-guidelines/): “While it’s unfortunate—and sometimes painful—that not everyone outside of ESPN chooses to play by such rules, we choose to hold ourselves to higher standards. Regardless of the provocation, Bill’s communication regarding WEEI fell short of those standards. So we’ve taken appropriate measures.”

What part of the guidelines in particular? King didn’t specify but here are a couple of items from the version posted on Deadspin: “Exercise discretion, thoughtfulness and respect for your colleagues, business associates and our fans” and “Steer clear of engaging in dialogue that defends your work against those who challenge it and do not engage in media criticism or disparage colleagues or competitors.”