Then I'm leaving town with that contract
And I'm spazzing out, grabbing the A&R out
His chair and I'm taking him hostage
As Mack starts to doubt his plan he comes up with the idea to take one of the A&R reps hostage if he gets caught. He is probably referring to either Steve Berman (head A&R, the Steve Berman of Eminem infamy) or John Ehmann (urban A&R)
A&R stands for Artists and Repertoire, a liaison between artists and the record label or publishing company; every activity involving artists to the point of album release is generally considered under the purview of, and responsibility of, A&R.
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