I don't think that the pursuit of ICANN over a specific domain name is going to go anywhere. ICANN doesn't operate any registry infrastructure, and as far as I know, its contracts with registries and registrars don't require those companies to take instruction from ICANN about the disposition of individual domain names. So to the extent that e360Insight thinks that ICANN has the power to suspend the domain name "Spamhaus.org," it's lawyers are woefully mistaken. This attempt will go nowhere. (See the Proposed Order drafted by e360Insight's lawyers here.)

But seeking to satisfy the judgment against registration interests supported by Reston, Virginia-based Public Interest Registry would be much more interesting.

For more, see this article on CircleID and this article on ICANNWatch.