Watch the Worry Wart Solo 3 online guitar lesson by Chris Buono from Guitar Lab: Blues Soloing
Looking at every 4th bar at the 2nd 16th of beat 4 you'll notice a diadic instance with a touch of gusto. In the first two choruses there's a biting double stop that throws some very cool altered textures against the G7 and G13 chords respectively. Over here in the third chorus you'll find a classic rock approved unison bend serving the same role against the G13/B. All three instances are moments where you just gotta lock up with the rhythm section and deliver a torpedo like these to make the solo that much more sinister.