This is a bit of a hijack or side discussion, really, and not relevant to Rendlesham, unless you have any suggestions about how mind 'control' (which I prefer to call mind disruption) may have been utilised in the Rendlesham case.
We have two particularly unusual accounts in the Rendlesham mythos.
The account of Halt, which is related to the famous Halt tape but contradicts it in some ways; most of the strangest phenomena described by Halt are not on the tape, and to be honest no-one else saw them either. Could that be an example of mind disruption by shadowy government officials? I doubt it- there do not seem to have been any attempts or opportunity by the US or UK military to coerce or corrupt Halt's mind.
On the other hand, Penniston's account is only tangentially related to reality; Burroughs and the other witnesses did not see anything of this kind, despite standing next to him. Could this be the result of deliberate interference with his recollection? You might be able to make a case for this - the facts are weird enough - but I think the most likely culprit is the hypnotist or hypnotists he has visited (who would presumably be civilians).