Ray Franz's book "In Search of Christian Freedom" relates a story (P352) about a JW called David Hayes who had a home security fire alarm business which amongst its many customers included some churches who was disfellowshipped despite making huge efforts to try to pacify the elders concerned , such as not installing any new alarms in churches and getting another employee to do any servicing on them. In my home congregation a JW who did window cleaning was spotted cleaning the windows of a flat owned by the Mormon church which was used by their missionaries and was called into the KH "back room" and despite reasoning that he had a contract to clean all 8 flats in the complex was told not to clean it otherwise he would be removed as a MS.
As ever in the Org things are complex and often contradictory. How "Lutheran" really is the university? It might be that its something of a historical name without a direct connection nowadays and / or that the seniority of the JW (perhaps he helps the Society write articles , for example) means he gets something of a free pass. A lot depends on the local elders.