It makes no difference at all. I suggested finding them a new home because you said the dumpster was your only option, when clearly it is not.
What do you do with saddles that don't fit you or work for you? Most cyclists I know have a collection of failed items. Shoes are no different. Sell them or give them away but there has to be more to the story to warrant the ill feelings you have towards them.
I have owned several Specialized bikes and currently have three. I own four pairs of their shoes and a lot of clothing. By my experience, they are a great company and they stand behind their products.