First of all, I don't recall many "Brohm boys" unless that's your name for posters who look to see some evidence in actual play, before writing a guy off. If I recall correctly, your main evidence was that he was drafted in the second round and then cut (before being picked back up and put on the PS). That simply isn't evidence of any sort. As for his performances in preseason games, there were a few and he had good, and bad, efforts.
With that said, I am far from writing off Brohm based on his performance in this one game.