Correct me if I'm wrong but I'm fairly sure plays get throw out if they can't tell what was going on. I vaguely remember hearing someone from PFF explaining this process. I don't think they just guess.
In other words, this is the sort of thing that will only be discussed in the offseason, after the draft, when there's nothing else to discuss until camp starts.
Seriously the period between draft and camp is the deadest part of the year.