When leaving JWdom there are 3 basic paths you can follow:
1, Standard Christianity: if you accept historic Christian doctrine, either Evangelical/Pentecostal, Catholic, EOC, mainstream Protestantism...
2, Atheism: Rationalist / materialist path - you reject faith in God or you stay as an agnostic.
3, "Half-JW": In case you are neither rejecting faith nor accepting Christian Orthodoxy (nor even liberal theology). Still you believe in JW specific doctrines - Unitarianism, Paradise on Earth, ...
Of course, many other paths could be followed (some people end up as Muslims, Buddhist, pagans; or in the camp of extreme political views), but these 3 represent basic types we usually meet.
Typically people that are "Half-JW's" use the argument "closest to the truth". It does not make sense for an atheist or for a standard Christian to utilize it, but people still attached to the WTS theology, even through they reject "slave class", could feel this way.