I've been having a debate on the question (elsewhere on the internet) as to whether the office of ministry some how evaporates if one doesn't have a congregation. My argument would be in agreement with Eckhart, namely, if it has been bestowed on you in the past, it doesn't some how go away if one doesn't have a congregation. If that was the case, then we would have to ordain someone every time they switched congregations.
I would qualify this by saying that one needs to be validly called to exercise said ministry in a particular congregation or perhaps missional setting. Just because one has the office doesn't qualify one to decide when and where one can exercise the office. There must be an actual body which God the Holy Spirit mediates the call to a specific setting. Hence, people who just decide to set up churches on there own without a call are wrong to do so.
Teaching false doctrine would of course also invalid one's ability to exercise ministry- so those who teach false doctrine should be removed. Nevertheless, if they repented and taught the truth, they could again exercise ministry without being re-ordained.
Does anyone object to this?