Stagger wording

[ExaltedTilapia]

Stagger's effect seems to trigger at the start of a models activation, putting restrictions on the first action before the first action is taken. If a model activates with stagger, somehow removes stagger before taking its first action, it looks like you still have to use your first action to shake?

If this is the case, since you cannot complete the second requirement, which is to shake stagger, are you allowed to shake a different condition?

[Negoldar]

Stagger will not impose a restriction on a character's first action if it is not present on the character when it attempts to use its first action.