Patadura

[aleCcowaN]

You're right in this case, I think, because than is followed by an expression that works as a noun, though it was intended in a sort of contrasting way (would you say "he claims not to own anything other than his home" or "he claims not to own anything other from his home"? do they mean the same to you?) .

For me it's:

the result was different than he thought it would be

or

the result was different from what he thought it would be

and I favour the first one. Do you agree?