for we may observe the Law even without being condemned by it
Think again.
Galatians 5
1Stand fast therefore in the liberty by which Christ has made us free, and do not be entangled again with a yoke of bondage. Indeed I, Paul, say to you that if you become circumcised, Christ will profit you nothing. 3 And I testify again to every man who becomes circumcised that he is a debtor to keep the whole law.
By your own testimony here, you are condemned.