My neighbor moved part of our property line barrier now I feel the urge to blow snow onto his driveway.
Do you really think this will solve anything?
He's the one who made the shoveling path slippery so I can't do it.
Both of you are in the wrong for trying to have a petty feud between your properties, and you just need to learn how to respect each other. You need to have clearer boundaries for each other and not start any fights or else take it up with the HOA.
What the hell. I'm going to do it and he's going to get mad.
You're right, he probably will get mad. But this is not going to solve any issues that you and your neighbor are having. I recommend talking with them and trying to resolve the issues you're having with the property barriers.