I read "ambtUßschussVerwandter", which in modern spelling would mean "Amtsausschussverwandter".
But that still doesn't explain what his job was. As far as I know, there was no "Amtsausschuss" in Württemberg. Maybe it has something to do with the fact that Maulbronn was not a normal "Amt" (district), but a monastery district. But again not a "normal" one, but a particularly large one.
According to the modern meaning of the word, Hans Knodel would have been a member of the executive committee of the district council.