Played through the Companions story and was doing work for cash. I got a "Hired Muscle" to beat up Mjoll the Lioness, probably for her rabble rousing or her anti-Semetic rants. I dunno. The next objective is to return to Farkas. I get the lee and he tells me I'm running a job for Vilkas. My journal would appear to disagree. I can't query him about work. He only can follow or talk about training. No following will fix either. Reload, fast travel, battles, nothing fixes or resets him.