I think the validation script needs to be amended a bit. I was able to completely bypass the batch authentication mechanism using injection WITHOUT the need to use anything already suggest and no need to comment anything out. My solution is also only 38 characters long (not that that matters at all, it just illustrates that it's not something that has a bunch of unnecessary stuff and failed validation because of it).
Long story short, the bypass on my system works fine but does not when I submit it as an answer. I had to completely redo the way I was bypassing and actually ended up adding a bunch of unnecessary stuff to get HTS to accept the answer.
I any admin/mod or author of ext basic 10 would like to PM me, I'll provide my shorter more optimized solution and they can decide if they want to include it in the validation script.