TWI, and all cults, intentionally confuse likemindedness with lockstep thinking.
There can (and should be) disagreements but these should be done with gracefulness and respect. Especially between Christians, who are all children of God, children of the same father. Siblings quarrel, but shouldn't fall out to the point of violence.
I am a (volunteer) Street Pastor. One of the requirements is that Christians from at least four different churches come together to serve the needs of their city. The idea behind this is to build Christian unity of heart. As we patrol, we talk with each other, sometimes about tenets of faith, but frequently about how we've seen God at work in our lives. Theological discussions don't have a place; we see God at work in each other - whether Anglican, Baptist, Methodist, RC, or some independent housegroup. SPs talk about God's love, his grace, and his powerful outworking.
And when we talk to vulnerable people on the street (whether they are homeless, or drunk, or drugged, or rowdy, or celebrating, or homosexuals, or just plain lost), we speak with one voice: we tell them that God loves them, cares for them, that we are the church and we've come to help them, talk with them, and see that they are safe. We preach by actions. It's got the attention of the whole country.
http://www.streetpastors.org/