At the end of the day … get on board with your church’s vision or get out.
You’re not doing anyone a great service by staying anyhow, maybe now toxic and disgruntled, sabotaging the vision from beneath. You’re not being helpful to the senior pastor if you strongly disagree with the direction he or she is taking the church. There is room for dialogue, but when that door is closed you have to get on the bus. You are there to serve the church, and submit to the leadership that God has placed over you and it.
Sometimes you have to live in meekness and humility and submit to the authority. Sometimes you just have to go. Either way, get in or get out.