They're basically admitting that their candidate can't make it to 270 then. If that doesn't signify the end, then I don't know what does.
If Trump can get back ahead in NH, NC and FL (which they don't call long shots) they get to 269. ME2 gets him to 270. If you look at his TV spending last week, this seems to be their strategy, with CO being their only additional significant spend as a possible backup.
It's a risky strategy to bet the farm on a plan that relies on winning NV or CO but if PA, WI, and MI are looking to stay in the blue wall, what other choice do they have? They are focussing on states Bush Jr won at last once except for NM (too many mexicans) and VA (home of Kaine)