MP
I approached this question the same way you did. I know it is possible but very unlikely event.
It is an unregulated casino.However, I checked the cards before and after the game and the decks weren't short. While playing there was no false shuffle. I also counted and nothing suspicious appeared. I know that dealing seconds from a gaffed shoe is possible and I was trying to look for a prism. The cards appeared unmarked. However, I didn't like the fact that they had red backs without borders. I know that those are cheater's favorites as it is hard to see if they push up the top card to deal the second.No selective hole card was used and cards pick up was in proper order. The dealer used to deal in regulated casinos in the U.K. and Sun City (S.A.)
Since I play unregulated casinos I try to familiarize myself with cheating techniques. I don't consider myself as an expert on cheating. I read zman's book and everything in print about cheating in BJ. I guess I am going to live with the doubts as I don't intend to try playing there again to find a positive proof for cheating.

