Yes, the title refers to what you think.

To the composer the psychological thriller "Deep Throat" wasn´t so exiting due to its images, but more to the underlying score (Yeah, I bet).

Variations on "Deep Throat" (double woodwind & double horn) actually are (musical) variations on the main melody of the Deep Throat theme song.

Not the standard melodic, harmonic & rhytmic ´classical´ variations, but variations upon the main intervals of the "Deep Throat-"melody: thirds, diminished thirds, fifths and diminished seconds. How far does a composer have to go to score his score.

The variations are preceded and concluded by an arrangement of the famous melody.

Underneath a MIDI-generated sound example.