It doesn't work like that. He wasn't willing to take a proper screenshot the first time, and since he can just not inject the hack the next time he starts blockland, that means even if his next screenshot is clean it doesn't prove that he wasn't using blhack.
He didn't even know what he was doing in the first place!
He did not even know how to take a screenshot, this was the whole entire point I was trying to get across, he did not know WHAT he was doing, he pressed the function buttons looking for the screen shot button and by mistake also pressed f5, that's what happened.
There is no other way to explain this- he is NOT using the hack