What all this pressure does is result in the security staff becoming over cautious to avoid the consequences of missing anything. It's a high pressure job, often working long 12 hour shifts, so please make some allowance next time you are there.
Surely the same applies to all other airports ? The main difference at MAN, as has been widely reported, is that when these ridiculous queues appear, it is not the passengers fault or the security staff fault but the fact that 4 or less security lanes are open out of 11 (T3).
I see Aug pax figures have flat lined and I expect this to continue or decline over the next 12 months as people who can make a choice, will do so after this years poor performance / experience.