There is a lot of contextual evidence that supports the claim the "end of the Law is Christ for righteousness" teaching is Paul's way of saying "The Law has brought us to Christ". Sorry for the length.
Romans 9 through the first half of Romans 10 is a re-telling of the entire covenant history of Israel from Abraham to the exile and beyond. To the extent that this is shown to be the case, it would make sense that Romans 10:4 states that the appearance of Jesus represents a particular "point" in that history - the point that the Law (a central element of the covenant history) was leading to. Thus, Christ is the "end" as in the destination of where the Law was taking Israel's covenant history.
Paul’s re-telling of the narrative of Israel is detailed and is presented in perfect chronological sequence and is summarized following:
· In chapter 9, verses 1 to 5, Paul expresses his grief at the state of his fellow Jews. So we already have an indication that what is to come will have an Israel focus;
· In verses 7 through 13, we get Abraham, then Isaac, then Jacob. This is the beginning of the Israel story, set forth in precisely the correct sequence;
· In verses 15 through 18, we get Moses, Pharoah, and the events associated with the exodus;
· In verse 20, Paul is clearly alluding to the prophets Isaiah and Jeremiah and their declarations that, like a potter, God has the right to mold Israel as He sees fit.
· In verse 25, Paul quotes from Hosea 2, a text which deals with the threat of exile and the promise of restoration. And what happens at the time of restoration – God will say to those who were not His people (read: the Gentiles) that they are now indeed part of His family. This is clearly an allusion to various covenant promises in Genesis where Abraham is told that his seed – the Jews – will be “a light and blessing to the nations”.
· In verses 27 and then again in verse 29, we have a reference to Isaiah’s teaching about a remnant who will come out from exile.
· And, of course, verses 31 to 33 bring us to Paul’s time – the Jews have stumbled over the Christ and / or the Law.
· So, in chapter 9 we have a detailed re-telling of Israel’s story, from Abraham to Isaac, to Jacob, to the exodus, to God’s warning about reshaping Israel like a pot, to exile and the promise of restoration, and finally to the Jewish rejection of the Christ.
· But the story does not end there. In 10:1-3, Paul continues with his treatment of the sad state of Israel in the present time (that is, Paul’s time). Clearly, the Jews are still in exile, even if they are physically back in Palestine.
· Now every Jew who knows his Old Testament should have been able to predict what comes after exile – covenant renewal! And that is exactly where Paul takes us. In Romans 10:6, he quotes from a famous passage from Deuteronomy that describes the mercy after exile.
Now, is this all a coincidence? Has Paul re-told the entire narrative of Israel, presenting all its important elements in the correct order, without intending to see the bit about Christ as the end of the Law for righteousness as a statement about the role of the Law in bringing the unfolding story to its climax, that is, Christ?
Yes, Paul is saying that Christ is now the place where "righteousness" is to be found.
But, and we need to be clear on this, in saying so, Paul is certainly not saying that "good works" are not needed for someone to be declared righteous.
If he were to say that, we would have every right to call him on Romans 2:6-7, where he clearly declares such deeds are indeed required.