Talks are continuing between Deloitte and restructuring firm Hilco - the group behind HMV Canada - which has already bought the company's debt. But any rescue attempt will see HMV emerge as a far smaller business.
Nick Edwards, joint administrator, said the redundancies were a "difficult decision, but a necessary one in restructuring the business".
Mr Moore - who also previously headed up failed camera chain Jessops - was the last of the board members to be made redundant after HMV hit the wall last month. Deloitte announced 190 job cuts last week in the first wave of redundancies.
Workers took over the company's official Twitter account to announce that their jobs were being axed, describing it as a "mass execution of loyal employees".
But there was better news for 200 staff at the collapsed group this week after Deloitte offloaded its remaining entertainment venues.