OOPS!!! Latex Stain on Cedar

I made the mistake of staining cedar shingles with a latex based stain. They are now badly pealing due to the latex not adhering to the oil in the cedar I suspect.

What would be the best way to get the latex stain off so we can re stain with an oil based stain?? we have access to a pressure washer, but I think that we would need something to loosen up the parts of the stain that are kind of adhering. I am thinking of something akin to an citrus based cleaner, does anyone have a better idea??? We are talk about 300 square feet or so of area, about half of which is over a deck

fred

-- -- Fred, Springfield, Ma