There's 3 truths here:
1. Trump wasn't telling Russia to hack us
2. Trump showed poor judgment in making the statement
3. The DNC is trying to exploit his comment
The bottom line is that when the DNC puts a huge bullseye on there forehead, you should just stick to the facts and rub their faces in it, and get them to hate Hillary even more. You shouldn't try to be sarcastic and give them a perfect diversion opportunity that will help them unite against you. I hate Hillary but Trump turned a massive positive into a setback here.