From 2010, but still relevant: Bruce Bartlett's fascinating memoir of David Stockman.
Stockman did have misgivings about the Reagan program. He felt that not enough effort went into cutting spending and that Reagan had been bamboozled by Defense Secretary Caspar Weinberger into endorsing an unaffordable increase in defense spending. Stockman foolishly expressed his concerns to Washington Post editor William Greider, who published them in the Atlantic Monthly’s December 1981 issue.
There was a huge firestorm when the Greider article appeared. Even today it’s hard to find a book or article about the Reagan economic program that doesn’t quote from it. But somehow Stockman survived and continued to serve as OMB director until 1985, when he left for a high-paying Wall Street job with Salomon Brothers. The following year he published a memoir that mainly defended the points he made to Greider.
While Stockman’s criticism was a shock to Kemp, Laffer and the other supply-siders, the truth is that he had really broken with them intellectually some time earlier.