Spiders make their way around your house all the time, rarely seen, and usually not rouble. I bet if you leave it until tomorrow, your guest will have gone, and you won;t see him again.
NB - you should not put house spiders outside in your garden. They are not the same species as garden spiders - they are used to warmth, and living with very little water, and they will not live long outside, so it's not being kind to pop them out of the door.