... on a ridiculous and likely-failed attempt to flee to Ecuador.
I don't get Assange's thinking on this part - there isn't any obvious way for him to actually get to Ecuador. Barring something quite remarkable, it appears he's just confined himself to the Ecuadorian Embassy in London for however long the Ecuadorians will put up with him.
Maybe he's trying to do the same sort of thing Chen did in China?
Chen was a de facto political prisoner of the Chinese and could only leave China with the acquiesence of the Chinese Government.
I can't imagine a circumstance whereby the British Government would acquiesce in allowing Assange to leave the Ecuadorian Embassy and depart the UK (other than in line with the determination of the British courts that he should be extradited to Sweden).