Marcia Smith posts a more detailed account of Jeff Greason's presentation on Wednesday at the Goddard Memorial Symposium: No Painfree Options -- "Deal With It" -- Says XCOR's Greason - spacepolicyonline.com - Mar.10.10.

Jeff urged that people face the fact that there "are no good options" and

be realistic in looking at where the human space flight program was headed under the previous plan and debate on their merits the issues about its future. Whatever the answer is, it is likely to be painful for someone.
...
"Constellation was designed for a budget twice what it got. That's what unexecutable means," he said, adding that it would require "four, five, six billion dollar increases every year for the rest of time" to be successful, including operations.

He later pointed out that each Orion capsule alone would cost $500 million.

Concerning commercial crew transport services,

He asserted that a "lot of lies are being spun" about the concept of commercial crew and it is "silly" to say that commercial companies cannot provide such services, but it is likely to happen first with established launch vehicles, not entrepreneurial ventures. He expects Falcon 9 and Taurus 2 to be successful someday, but Delta 4 and Atlas 5 already are proven.