No, I think it's the opposite... your process is sound so there was nowhere for BT to make a mark on your beer. I think that's absolutely true. For me, it's simple... I do not taste my bees while they're in production. The very first taste of my beer is either after it's carbed and it's in my on-deck fridge or when it first goes to the draft fridge. I sample it. I might weigh out that there is still yeast in suspension or take into consideration the beer's age especially if it's young. If it tastes good, I'm good. If I try it the next day and the day after that and it's good... it's good. If I detect something that seems off (like this thing that you and I have shared stories about where a beer tastes like dirt or hops seem to have disappeared and the beer has no punch to it) and it's off more than one time that I drink it... then something is wrong with it. I have been mostly WOWED by the beers I've made since using brewtan. That doesn't mean it's the brewtan but it doesn't mean that it's not either.If it works for others it is really gonna make me wonder if I'm brewing such bad beer that it cannot be saved lol.
Btw... did you ever do the LODO process as outlined by the GBF? I took some steps in that direction but could never really duplicate all of the steps as they laid them out because my system is not sophisticated enough and they made it sound like "one wrong move and it won't work!" so I just didn't go there. But I don't dismiss their claim because I never tried it myself and I never tasted anyone's beer who supposedly tried it. Maybe there *is* something to their claims but I won't know, personally.