put the toothpaste back in the tube

To attempt to revert a situation to how it formerly existed by containing, limiting, or repressing information, ideas, advancements, etc., that have become commonplace or public knowledge. Almost always used in the negative to denote the impossibility of such an attempt. Many people lament the ubiquity and pervasive nature of social media, but there's no way to put the toothpaste back in the tube, unfortunately. There's no way to put the toothpaste back in the tube once a bombshell like this gets out. We just have to resign ourselves to the fact that the company will be in chaos for a while.

the toothpaste is out of the tube

To rescind information that has been shared or reverse an action that has been taken, especially that which is damaging or undesirable. How confident are you in this information? Because once we announce it, the toothpaste is out of the tube. The company has sought to make reparations for the harms its former CEO caused, but the toothpaste is out of the tube, as it were.