I relate to Paul in this verse. It looks like he may have been mild-mannered in person, and much more bold and forceful in his writing. That happens to me, too. My in-person style is so mild and non-confrontational, it would probably astonish some of my parishioners to read some of the sharply worded things I've written. As I reread my comment on the post below this one, I find myself thinking two things:
1. I agree 200% with the substance of my comments, and
2. If I had it to do over again, I would be slightly more diplomatic, though no less adamant.
There's a place for confrontation and confuting of error (Titus 1:9), and also "speaking the truth in love, we are to grow up in every way into him who is the head, into Christ", Ephesians 4:15. The truth and the love both must be there. They're part of the same thing, or rather the same Person.