i think - and i, truly, can't claim to speak for NKT or WSS so this is just my understanding - that the demos were a response, a countermeasure to oppose the renewed pressure that the TGIE applied in 2007/8 through the ID cards, signature campaigns, and so on. they had good results, certainly; but they were a very wrathful action and, clearly, upset a great many people. i think it was felt that the point had been made but to continue to demonstrate might not, at the time, serve any further beneficial purpose.
now, it seems, is the time for a more peaceful approach, to encourage more people to find out about the ban - by reading A Great Deception, for example. even this is strong medicine! but a powerful sickness requires strong measures. i think we can expect the approach to be somewhat more measured now, though.
karma changes and no one but the Enlightened beings can say what will be appropriate in the future, however. i think the WSS response will always be defensive, in reaction to the Dalai Lama's actions, however, rather than offensive. he stops the ban, the WSS disappears! he attacks, the WSS defends.