"Fortunately, they have little interest in people. Dock spiders are generally not aggressive regarding humans and will usually hide when we approach. A dock spider will only bite a person in the rare situation that the spider feels threatened, for instance if the female spider is protecting its young.
Unless you grab the spider or inadvertently step on it, you will likely never be bitten."
Certainly putting your foot into a shoe where one is hiding would qualify as "inadvertently stepping on it"
http://www.cottagetips.com/tips/fact...-dock-spiders/