What would happen if Assange stepped out ?
OK: he would be arrested, but the charge would be skipping bail. This seems to carry a penalty of 3 to 12 months inside. Now that the Swedes have said that they do not want him, he might as well accept a spell eating porridge as being preferable to continuing to have whatever Ecuadorians have for breakfast ... he might be free more quickly.
I suppose he might worry that the USA would seek to extradite him on the grounds of exposing their criminality^W^W^W^W spying, or something. I don't know how real this might be.