This is not grabbing at straws. People tend to act consistently in similar circumstances. Your willingness to argue from such slender premises and your attempt to justify an egregious error by citing to a doubtful (and erroneous) source rather than the original sheds a good deal of light on your modus operandi. If you'll do that to try to cover up a mere spelling error, what does that say about your willingness to cover up more important things?
Richard W.