My take on it:

1) The TSA liquid ban is stupid -but we have plenty of other threads to discuss that.

2) The TSA guy needed to escort her back into the exit lane in order to make sure she didn't sneak into the terminal

3) She spilled it intentionally and her credibility is nil with me.

4) Three to four ounces of water on a polished stone floor that gets lots of foot traffic (and where that foot traffic tends to be encumbered by luggage) does indeed constitute a safety hazard.

5) The TSA pretty much seemed to have very little to do with it post-spill, but the LEO acted like most LEO's will act when they do someone do something that is likely to cause harm to others. Some may find this LEO behavior good, and some may find it bad, but if you've seen cops in action, this is simply the way it is.

6) The marginal costs to the TSA are indeed very small. Even if they are required to pay for additional bandwidth (which I doubt), the additional cost is extremely small, and it didn't take too much to put the page up. I do find it interesting that out of all the stories that have made the news, this is the only one that they uploaded video for.

7) While I don't fault the TSA in this incident, I do think that at times all sorts of outrageous things happen to the traveling public at checkpoints and this incident provides cover to the TSA to claim that all of these stories are untrue. This woman is not helping the cause of those who want reform in the way the TSA operates, she is only diminishing their credibility.