We are clearly on the side of Jesus and righteousness in this passage. It's easy to see how wrong-headed his opponents are. To quote Shawshank Redemption, how could they be so obtuse?
Holiness was something awe-inspiring in Jesus' day. It was not something they took lightly.
If they really need healing, why can't they just come back tomorrow?
Yet Jesus cuts through all of our excuses and declares God's priorities.
The miracle of healing couldn't come outside of God and so once again, Jesus receives God's implicit agreement with his teaching.
Rather than humbly bowing before God acting on this holy day, they decided that they would rather keep God boxed in to what is comfortable.
Surely I've never done this!