Hi Paul, Yes there are footboards to add and looking at the sketch no they wouldn't cover up it mistake. I haven't progressed that far as I am still angry with myself over the cockup and seriously thinking about a reprint with the various improvements I have been plotting.
How about trying the solvent that can be used to separate fingers from super glue - acetone / nail varnish remover from a quick tinternet search to see if the parts will separate.