Nhandu Chromatus molted n I almost got bit

I MADE A BIG MISTAKE!!!!!! My Acanthoscurria Geniculata(GIANT WHITE KNEE) by mistake I left the lid open and my Nhandu Chromatus could of fallen in the tank with the white knee and it would of been a disaster.I am so bless nothing bad happen.I only notice after I saw the video.I still have the video up because my male nhandu chromatus past away over a bad molt and this is the only video I have of him. My apology I should of been more careful.