Yes, I saw David Oliver Smith talk about his work on chaistic structure as a tool for detecting interpolation here:
I agree with him that chiasic structure does appear in Paul's writings. It is a tool that needs to be used in combination with the full range of other tools (eg. my exegesis of Gal 2:16-19 where I connect "consult with flesh and blood" with "James the Lord's brother" thru an ABCCBA chiastic structure).
I think the prevailing scholarly argument that Paul did not learn anything from the apostles before him and that he got all of his gospel from revelation is a gross misreading of Paul. David Oliver Smith takes that wrong exegesis to its logical wrong conclusion when he treats Gal 2:2b ("...set before them...the gospel that I proclaim among the Gentiles, in order to make sure I was not running or had not run in vain") as an interpolation, but does not question "to whom not" in Gal 2:5.
As I see it, there is one key point in Galatians where Paul acts on "revelation" and he does so against the stream of "some from James" and Peter and even Barnabas: this is in Antioch, a place where Barnabas had been eating with Gentiles. When Peter came, Barnabas withdrew and separated himself because of "fear of the circumcision". They expected Paul to participate in this "play-acting" just as he had done previously in Jerusalem when they had all "yielded in submission" to the false brothers for an "hour" (by asking Titus/Timothy to excuse himself from the dining/meeting room). But for Paul, in the Antioch context, that "hour" was up.
I think my interpretation draws out a coherent sense of the standard critical text of Galatians 2 (minus "to whom not" in 2:5 and 2:7b-8 which I regard as interpolations), but I admit my reading goes against scholarly consensus and it would require a full essay to defend it.