When the conduct or policy of Directors comes under close scrutiny, then it is they who carry the can as often as not. Witness the Co-operative Bank saga so recently in the news. The difference with Military VSOs, and in particular RAF VSOs, is that they never carry the can for the consequences of their actions or policy because they control the evidence to hand and can direct the outcome of investigations into the outcomes of their actions.
Being a DH in these circumstances is akin to being a tethered goat, staked out for sacrifice as and when it becomes deemed to be appropriate. This is, in relative terms, a fairly recent phenomena, and in the case of Airworthiness Provision (or more accurately its lack of provision) can be dated precisely from 1987. If RAF VSOs will not take responsibility for their own actions then the future of the RAF itself is at stake. That is a matter for the RAF. In the meantime its business of providing for UK Air Power is already very seriously compromised, and it may not have the luxury of presiding over its own demise should a potential enemy have other ideas...