Whatever you think of Julian Assange, "imprisonment without trial" has been his choice. If he were to leave the embassy, he fairly certainly would receive a trial.

How can you believe that when they literally forced down diplomatic planes over Europe for just some of the leaks the US are out to get him for? When the whole Swedish bar association is up in arms at the abuse of process and Swedish image related to the farcical charges? When the documents about his police statements there were all leaked and clearly show his innocence from the allegations? To me, your thought process just seems naive.

That's nonsense. He is fleeing arrest by locking himself in neutral territory. That's self imposed house arrest.