Mr Farmer advised council members to dismiss Mr Foster without notice after a series of critical reports from the district auditor last year. An all-party panel set up by leader Jeffrey James ruled Mr Foster should answer the allegations, and the QC was then appointed by the Welsh Assembly.
Mr Foster had been chief executive for five years. He had been suspended for the past 10 months.
'The independent report was not made public but it is understood the allegations include a trip to Geneva by Mr Foster and another councillor, the appointment of two communications companies and hospitality from a potential developer,' a spokesman said.
The 59 charges reflected the concerns of the auditor over credit cards and hospitality and are also understood to cover the development of Dyffryn House, a National Lottery heritage fund application for Dyffryn Gardens and other capital expenditure.
Mr Foster was accused of 'serious misjudgment' for accompanying a councillor to Switzerland for the draw of a football match involving Barry Town, according to one council member.
The hearing was delayed at the end of March because Mr Foster was unwell.
He was unable to attend the final hearing and could not be reached for comment, but was said to be 'extremely disappointed' by the conclusions of