One possibility, If SK is still in the dark(=believing the thing), bob and the company needs to pretending doing something to keep it that way until all the money are spent or packeted legally.
If the project has to fail, they also would prefer it fails more gracefully and to project the image that they did everything possible and they are not the ones to blame, so not to overly impact their next project negatively. Remember, they are serial entrepreneurs. They must be mindful of their next projects all the time.
In other words, if, in general public's mind, Dave's this debunk is successful, Dave had just debunked their cridibility, compedence and truthfulness, and, in away, their upcoming projects. In that sense, this is a battle they have to fight and sustain to control the damage, rather than abandon.