Refreshed: I understand scripture to mean both. Spiritual and physical. Yes, we know about the sabbath and not to be legalistic with it due to the spiritual side of things, but we do go to church...don't we? People do get circumcisions.
Me: Going to church is not keeping the Sabbath though. We should assemble ourselves together as the scriptures say and doing that has many benefits, but that still doesn't mean we are keeping the Sabbath.
And getting circumcised does absolutely nothing other than possibly prevent certain hygiene issues.
Gal. 5:6: For in Christ Jesus neither circumcision nor uncircumcision avails anything, but faith working through love.