Last night, I found the answer to my Barricade problem.
Apparently, with the Frenzy figurine packaged in the "First Encounter" Screen Battles set, Hasbro felt it was redundant to have two of the same character in the box. To resolve its problem, a small piece of plastic is placed between the legs and torso of (Barricade) Frenzy's "engine block" mode. The flared pieces of this piece, which I'm designating the "restrictor plate", keep you from sliding Frenzy in and out of the car the way you would with the individually packaged versions. Another difference is that the entire mini-figure is molded in black, with even the eyes left unpainted.
1. To remove the restrictor plate and "play" with Barricade and Frenzy like you would the Wave 1 version
, Take a #0 Phillips Screwdriver and carefully remove all 4 screws underneath the front of the car.
2. Carefully pry the hood from the undercarriage until you can use something (a free finger, the butt end of a spoon, etc.) to slide the wing of the restrictor plate from underneath the columns that the screws go into. (Note: The arms/fenders may need to be away from the hood in order to attempt this step.) Repeat the same technique to free the wing on the opposite side.
3. Transform Frenzy (or "Rumble", if you prefer) into robot mode and remove the "restrictor plate". To see how well the feature works without the plate, convert him back into an engine block.
4. Reconnect the top half of the hood to the bottom, then rescrew in all 4 screws.
5. To see how differently Frenzy works without the restrictor plate, slide down the ram bar then insert engine block/Frenzy back into car. Raise ram bar.
6. Lower ram bar (as you would with original or Recon Barricade). Frenzy engine block slides out enough for you to complete ejection process with your bare hands.
FINISH - Now both Barricade and (black) Frenzy are ready to battle the heroic Autobots!