After the scandal, the political party disassociated itself from the questionable candidate.
The problem is easier to understand if you disassociate the variables.
The fabric of the coat disassociated when I washed it.
You can also disassociate yourself financially from someone else's bad record.
Just as Christ does not disassociate Himself from a sinner like me, so we ought not to disassociate ourselves from our fellow sinners.