Sure looks that way as evidenced by the code (the "02" indicates a second setting of the same sheet). It also makes sense because Taster's Choke and Bald were possible substitutions for the 2nd Series (as noted on the proof sheet pictured in the Gallery), so they were created early in the game. Topps probably just decided NOT to run the sheet and just go with the second series.
my theory is that this is, and always was, the mail away poster and nothing more.
The wrapper ads say "The Original 1st Series Wacky Packages reproduced".
My thinking is that only two cards had been C&D'd when they first came up with the idea of a reprint poster. Only Skimpy and Bandaches had been pulled and so they revised the sheet for the poster. Still basically the first series, plus a couple of new ones.
Then Maddie Boy and Quacker sent C&D's, and suddenly there were 5 more holes to fill. With 8 total spots, it suddenly made more sense to fill in with series 2 cards.
Wow. Can you imagine if Taster's and Bald were only available on the reprint poster???