I was there, but not racing. I did hear the angst billowing through the pits about debris induced traction issues at a very critical point of the track.
That being said ...
I understand that a racer has to be able to adapt to either permenant or temprary track conditions. That is a given.
The issue I see here is a terrible lack of communication by the track (or even NASA-Tx) about the permenant or fixed changes. If NASA-Tx knew about it, shame on them for not mentioning it in saturday's driver's meeting. If the track didn't mention it, shame on them.
Friday evening offered an opportunity for driver's to walk the track. So, shame on the drivers for not ENSURING that the track was status quo.
However, the track going cold at 5pm, leaving only about 45 minutes of daylight hindered this effort.
Let's also not lose sight of the fact that none of us are Micheal Schumacher. We're just folks who can muster enough disposable income in order to go racing. Expectations need to be tailored accordingly.
The blame-game, finger pointing can go on for a long time. Lots of blame to spread around
My take on it is simple ... if there is a safer solution, why not use it? Work-arounds will get someone in trouble eventually.
HANS devices, door bars, right side head restraints ... I prefer to not have to count on them, if you know what I mean.