It is clear that the glory of the law was to be done away by the glory that excels when we turn to the Lord. That glory that excels that of the law was the glory and ministration of righteousness that comes by faith through the Spirit. When we turn unto the Lord by faith, the liberty that we have in Christ is through the glory of the Spirit which has done away (or annulled) the glory of the law. The glory of the law has been done away by the glory that excels it and we have that glory when we turn to Christ. This is how the law (the first) is established when the first was taken away by the glory (of the second) which excels and is greater, that the second might be established one and for all (Heb 10:9). Now read (Heb 10:1-4) and the following passage and they are speaking of the cure of the law but rather of the death and condemnation of it...
2 Cor 3:7-18
6 Who also hath made us able ministers of the new testament; not of the letter, but of the spirit: for the letter killeth, but the spirit giveth life.
7 But if the ministration of death, written and engraven in stones, was glorious, so that the children of Israel could not stedfastly behold the face of Moses for the glory of his countenance; which glory was to be done away:
8 How shall not the ministration of the spirit be rather glorious?
9 For if the ministration of condemnation be glory, much more doth the ministration of righteousness exceed in glory.
10 For even that which was made glorious had no glory in this respect, by reason of the glory that excelleth.
11 For if that which is done away was glorious, much more that which remaineth is glorious.
12 Seeing then that we have such hope, we use great plainness of speech:
13 And not as Moses, which put a veil over his face, that the children of Israel could not stedfastly look to the end of that which is abolished:
14 But their minds were blinded: for until this day remaineth the same vail untaken away in the reading of the old testament; which vail is done away in Christ.
15 But even unto this day, when Moses is read, the vail is upon their heart.
16 Nevertheless when it shall turn to the Lord, the vail shall be taken away.
17 Now the Lord is that Spirit: and where the Spirit of the Lord is, there is liberty.
18 But we all, with open face beholding as in a glass the glory of the Lord, are changed into the same image from glory to glory, even as by the Spirit of the Lord.