While I would cringe at the thought of this, it seems recently that the flight crews in particular have been singled out for a lot of close attention during security checks.
The loss of the jumpseat may also be an indicating factor implicating this theory.
To withdraw the jumpseat over 2 incidents of ex employees trying to jumpseat is a little extremist, even in this situation. It's been happening like that for years but if there was evidence suggesting they could jumpseat it's withdrawl is now more understandable.