It is what it is - people trying to rationalize it as if its not some possibility.
As a former Seabee (military construction forces), one of the bases I stayed on and helped build up was a German base. In that area of the world and particularly Afghan, Sand flea's carry a disease called leishmaniasis (google at your own peril; some pics you need a strong stomach for). Sand flea's hover 5 ft above the ground and build homes/burrow in the dirt. After 100 german soldiers died within a year from the disease, they dug out the entire area by I think 30 meters. The entire area of the base was 15 meters below sea level after that, and they did it in under a year (northern afghan, mountainous area). (the sand fleas at this point were mainly threats to animals; count tell you how many dogs i saw with it...american's often referred to it as "afghan herpes")
Yes I understand its not a direct comparison - but the idea that the site can't be dug and cleaned up let in a timely manner to me is ridiculous.
And if people are worried about time - it's not like the NFL is going to die with a project taking a year longer to complete, especially if the option is more friendly to other owners (particularly spanos/davis) and brings in more revenue. Then again I am the one of the few people who thinks the other owners, particularly Spanos, is going to want to move in with Kroenke (and you don't go off posturing "I got the votes to block you" then believe he's going to do a 180 and take a lesser deal)
/end rant