i believe the orbit and mass requirement meant there was no fuel left for landing the center stage. I think the configuration where they can't re-use the booster is called "full thrust".
"Full Thrust" is the name for Falcon 9 v1.2 when they upgraded to Merlin D engines which are a lot more powerful than Merlin C. All current Falcon 9's are Full Thrust, expandable or reusable.
Or ... "max waste" ... no harm being honest about it and keeing peoples eyes on the prize!
"Max waste" would be all three boosters not surviving. One booster being expended is more like "min waste" (besides losing none, obviously)
"max waste" would be all 3 boosters exploding on the pad with the engineering team swarming around them. Nedelin style.