Neat alliteration, but achieved at some damage to the Queen's English. Perhaps it was done by a republican headline writer bent on sabotage. For some reason that I don't understand, but which I must track down some time, distrustful and mistrustful are synonyms. I have never encountered the variation untrustful, but we do say untrustworthy, not distrustworthy or mistrustworthy. Disinclined, as far as I can find from the dictionaries, is just disinclined.
Nobody acknowledges uninclined or misinclined.
So we are safe with that one. The Macquarie Dictionary, usually the most permissive of them all, wags a disapproving finger at those who use disinterested to mean bored or indifferent. It's got the right sound to it. The editor of the new dictionary, Dr Bruce Moore, tells me that he is firm in his defence of the correct meaning of disinterest. But his dictionary may be used in defence of the corrupted meaning.