They can live a few days without food or water. I sympethise, but here is a way out (for both of you!) Take a few deep breaths, lift one oedge of the glass gently and slide a book / nespaper / placemat under it. Lift book and glass together and head for the front door, which you have opened already. Place the book on the ground, lift the glass, stand back, and watch spidey make a quick exit! If this sounds beyond you, get someone to do it for you, and soon, it;s a shame to let the poor thing stave, although like you, I can't go near them!