Commenting on Galatians 3:10, Bruce sees Paul’s conversion as a decisive break from legalistic Judaism: “Paul’s confrontation with the risen Christ on the Damascus road after his grounding in Judaism, and the new understanding of salvation-history which sprang from that confrontation, compelled him to see the legal path to salvation closed by a barrier (which he would not have refused to identify with the cross) which carried a notice reading: ‘No road this way.’” F. F. Bruce, The Epistle to the Galatians (NIGTC; Grand Rapids, Mich.: Eerdmans, 1982), 160.
I would say that is solidly “Old Perspective”!
F. F. Bruce was a careful exegete and he is certainly not importing his personal conversion experience into his reading of Paul. It is simply the case Paul saw his own Gospel as a major break from his previous way of life in the Judaism of the Second Temple Period.
That is not to say that Paul rejected Judaism, however. In may very well be that he thought of himself as reforming Judaism with a “new understanding of salvation-history.” As I said in the previous post, Paul’s experience is unique in salvation history.