Ask HN: Family Business Goes South

tl;dr Family starts brick & mortar business, founders dispute, how to deal with aftermath. Long version: Two family members and I started a bar business located in Arkansas. First business venture for all of us, and therefore we didn't know anything about vesting or the like. We have an LLC with 1/3 ownership per partner, no exit-clauses, no vesting, no special cases. Basically the minimum paperwork you could have filed. We took out a loan and also all invested a small (mid 4-figure) amount. There was a business-related dispute that turned personal after about one month. One family member--we'll call him Angry--walked out and has not been back in in over two years. He has not spoken to either of us regarding the business. If relevant, the dispute was about how to run the business, Angry didn't agree, and it had to do with changing a couple of trivial things he had been doing. It was presented well (we weren't shitty) and culminated in several "fuck you guys" from Angry. This has been a lingering shadow for two years, and we'd like to handle it--especially because I plan to depart from the business myself. We have opened a dialogue with Angry, who appears to believe he's owed 1/3 of the "profits"--disregarding our (time) investment (over 15,000 hours combined) vs his (about 70 hours the first month). Also, if relevant, profits are negligible (think breakeven) not counting a VERY meager draw the remaining founders have taken weekly. What do you think? The paper says he's owed it, correct? Do we have any (legal) recourse? Is there a way to "make things right?" What's right? Angry will seek the maximum money, regardless of morals/values/etc. Also, lessons learned: vest shares, don't mix biz and family, take care of this way sooner.