> I also suspect that the 'shun corruption' just means they havent been caught yet.
No, they are actually quite decent people. Birgitta has been an advocate of term limits and intends to not run again (even if term limits are not imposed). She is an artist and has been a consistent defender of the average citizen. Jón Þór is in his first term and has decided to step down mid-term to allow his replacement time to acclimate to Parliament before the next election (which is in 2017, barring public uprising). Helgi Hrafn has indicated he intends not to run again. All of them are passionate about the outcome of the next election and intend to give support to the running candidates.
Corruption of the sort you see in USA does not happen as much in Alþingi, it's more nepotism by the executive (parliamentary rule, which is problematic) than blatant bribery by funding campaigns.
Grassroots for the Pirates is very active and these public servants, truly are serving the public, not the party.