With the rows..think about it as a curl. Most people (including me) will say that you shouldn't have much sway when curling...obviously you will have a tiny bit unless your back is flat against a wall. But once in a long while, it's okay to overload for a couple of weeks which would mean you
start cheating/swaying at the end a little to help get all the reps. Since you're only adding about 10 pounds or so onto what you would normally do, you shouldn't have to cheat so much that you'll risk injury. Obviously if you keep adding weight past a couple of weeks, you'll have to cheat more and more each workout to compensate for a lack of strength which could definitely put you at more risk for injury.
So now think about rows in the same way...try to get it as explosively as possible, but don't worry about humping it up a little since you'll probably only be doing it for another week or 2..just don't make the excessive humping a habit
Lmao! Isn't that the purpose of cycling though..so your body doesn't start depending on it?