I don't think he was intending to deny the dogma of the real presence. In fact, he affirmed it at one point. Rather, he was laboring at another point, strained though it may have been. You see, the problem with these men is that they have abandoned Scholasticism, traditional formula, piety, etc. and set out to put the teachings of faith into modern ways of expression. This has been their stated goal from day one. And the works they cite are examples of just how bad this endeavor can be.