Well, that's why the "reasonable accommodation" standard exists in the U.S. Simply demandimg all of his colleagues to passively accept speech and behavior that is rude, abusive, or caustic to team building, or paying monthly consultants come in to analyze the new work frictions and host workshops isn't likely going to pass muster. These people need and should get help, but they aren't entitled to a workplace that disproportionately revolves around their quirks.