I hate to say this, but the Spurs are done as championship contenders. We're 0-7 against other contenders this year (OKC, Indiana, LAC, and HOU). Our record is fool's good -- we beat up teams like the Magic, Bucks, and Pelicans. We can't close out games like we used to.
A list of notable late game collapses from recent memory...
2013 Game 6 vs. Miami (Finals): Spurs up 5 w/ 28 seconds to go (with the Larry O'Brien being wheeled out), missed free throws down the stretch and defensive rebounds
2012 Game 6 vs. OKC (WCF): Spurs blow a 16 pt lead and a 2-0 lead
2011 Game 1 v. Memphis: Shane Battier left open for a three
2006 Game 7 v. Dallas: up 3 in the waning moments before Dirk get's fouled (and 1)
13 pts. in 35 seconds: Tracy McGrady (former Spur) puts up 13 pts in the last 35 seconds to beat us
2004 v. LA series: blows a 0-2 lead (with home court advantage)
2000s (Shaq + Kobe): I'm too upset to actually look it up, but there was one game in either 2001 or 2002 in which we blew a 20 pt lead
Should I go back any further or is this enough ether for one post?
We need to blow it up now. Trade Parker while he can still yield 1st round picks and start the rebuilding process now. Throw a 5mill/year deal at Larry Brown of SMU (whom Pop has great respect for) and start grooming him for the future of this franchise.