Do you actually have building insurance? In NSW lots of two are allowed to NOT have strata insurance if they so desire.
Working on the assumption that relations with your neighbour have broken down irretrievably, if you have proof that the other owner blocked the necessary work which was later ordered by the CTTT you could send him a bill for the restoration work and then pursue it through small claims at a Magistrates Court.
Just because you live in strata doesn’t mean you can only go through the strata processes to claim reparation for someone else’s behaviour.