i probably c/c with no intention of folding on this turn whatsoever. Sometimes, ppl really bluff in this spot very often and you might extract more value from worse hands like flush draw, two pairs, top pair, second pair, etc. On the river,you either throw out a blocking bet/fold to his big raise or c/c his moderate bet. This is how i handle this aweful situation out of position when i have some fairly strong hand but not nuts.