This time last year, Mr Christie wrote to the then Local Government Minister Chris Tremain and asked him to institute an independent inquiry into circumstances surrounding the dismissal of Mrs Walters-Gleeson.
"A review committee should examine his actions now because what happened didn't stack up, always seemed unjust and not logical ... all that I've said previously when they had that review which was a whitewash have proven to be correct," he said.
"That lack of judgment [by Mr Simpson] has cost us, and it's the ratepayers we're talking here, tens of thousands of dollars - money that could have been used for a lot of council projects."
Mr Christie hopes the council doesn't appeal the ERA's decision as that will mean more money going into lawyers' pockets.
"The council should look at this judgment and consider its next process which is to go to the review committee."
The council has declined to comment on whether the councillors, Mayor Sheryl Mai or Mr Simpson would decide if an appeal should be lodged.
Local Government Minister Paula Bennett wouldn't intervene in the matter.
"Under the local Government Act, I can only intervene as minister when a significant problem arises that a local authority cannot deal with. This matter is being dealt with through the Employment Court which is the most appropriate mechanism for employment disputes. The performance of the CEO is a matter for the council to consider," she said.