I don't know... it doesn't look like fake accusations to me. It was more like things that were there and US used for an entirely political reason, but the claim still seemed legit.
Also, it seems they dropped the charges due to a technicality: "Marianne Ny said his arrest warrant was being revoked as it was impossible to serve him notice of his alleged crimes"
Who knows, the accuser, Anna Ardin left Sweden for Israel shortly after making the accusations and has not made a single comment since then as far as I know.
Doesn't twitter count? https://twitter.com/therealardin If you mean that she hasn't made "a single comment" about the allegations, then it is possibly so that she is a public figure and doesn't want to be "the girl who accused Assange of rape" for the rest of her life.
Far from it. I would watching recommend Laura Poitras' (of Citizenfour fame) new movie Risk. It follows Assange over the course of 6 years, including through the rape allegations. It's an extremely intimate view as Poitras is able to get ostensibly unfettered access to Assange.
Assange's private reactions to the rape allegations seen in the film seemed pretty telling to me. He is clearly made uncomfortable by them, and offers somewhat misogynistic conspiracy theories in his defense. I really got the sense watching it that it was more likely than not he committed some kind of sexual assault. I think even the most dyed-in-the-wool Assange supporter would be left with a lot of uncertainty at least after watching it.