In "Clean Break From The Past," House GOP Calls for Ban on Earmarks. What Will Roy Blunt Do Now?

UPDATE: Blaine Luetkemeyer supports the GOP proposal. 

House GOP Leader John Boehner (R-OH) announced in a statement today that his caucus is "serious about reform by adopting an immediate, unilateral ban on all earmarks."  ABCNews.com:

Conference Chairman Mike Pence, R-Ind., said the decision to "renounce earmark requests of all kinds" came only after a "marathon debate" among conference members.  But he praised the decision as "a new way forward."

"By standing in favor of a moratorium on earmarks in this Congress, House Republicans are making a clean break from the past," Pence said.  "We are offering the American people a fresh start on spending in Washington, DC."

Emphasis added. This "clean break from the past" is a "clean break" from the leadership of people like Roy Blunt -- and this puts him in quite the pickle.

As a "proud and prolific earmarker" for so many years, will he stand on principle and defend his record?  Or perform a great feat of rhetorical gymnastics and support his caucus' ban?