This interview with Carlo Taormina is fantastic. Key points (all according to Taormina):

• The “processo breve” is a bargaining tool. Offering to remove it from the agenda can be seen as a concession; a concession can win quick approval of a text of “legitimate impediment”.
• The bill on “legitimate impediment” (repeated postponement of trial hearings due to demands of government office) is unconstitutional, and Berlusconi’s circle knows this
• Legitimate impediment might be declared unconstitutional, but by the time that happens, a new constitutional amendment (lodo Alfano-bis) will guarantee prime ministerial immunity
• Once this is all passed, Berlusconi will call early elections in 2011, and then wait for the presidential elections of 2013. Assuming he gets that, he’ll be with us until 2020.

Nice to see someone from the centre-right putting these things down in black and white. [h/t Mattia Guidi]