Normally I would've apologized for something accidental like that. All I can think of is that I was so surprised that right after warning your partner that you guys should be careful around me, the very thing I'd gone out of my way to prevent had happened. I didn't realize that you'd been hit in the face and had I known I would've offered help.
I'm sorry I hit you with my oar. Of course it was an accident and I felt badly enough that after getting home I broadcast the warning to the community. Hopefully all of us can have a safer, more enjoyable time on the river.
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse