No, he wouldn’t.
Because right now there are teams of RNC and JW lawyers compiling a million incriminating questions for Big Bob to answer.
The old man is a fool for giving in. The Republicans on the committee are going to tear him apart and give Durham sworn testimony.
And Barr should hold back everything that might be declassified until Mueller testifies under oath. Get his story on the record and then release all information, especially call attention to things which oppose Mueller’s sworn testimony.