No, that would be regarded as a complete failure. They have abandoned plans before when it seemed they likely had a low probablilty of success. 'Bojinka' for one.

There is a slight risk of someone bringing an explosive liquid to a checkpoint. A very slight risk; and that risk is no greater now than it was during the first 4+ years of the TSA's existence. Or the preceding decades of private sector screening in place since the Korean Air occurrence. The difference now is that the American public is cowed.