Vowing to Stop Disengagement
The headline is not as it seems. You're reading it wrong. Some people are vowing - actually taking vows - in order to stop the Disengagement (Hayo Lo Tihyeh). This is something allowed according to the Shulhan Aruch in times of trouble (see Yoreh De'ah 203:5). This is what Arutz Sheva says about it:
...the organizers call upon "tens of thousands" to take upon themselves the following commitment:
"If G-d comes to our aid and to the aid of all Israel, and preserves us during these times of tribulation as the sword of destruction and expulsion is lifted against us, and saves us and gives us the areas of our Land and inheritance in Gush Katif and northern Shomron, with their communities and residents - men, women and children - ... then, we, men, women and youth, commit without a vow to dedicate part of our time on behalf of the Land of Israel and the Nation of Israel according to the Torah of Israel once/twice/three times a month for the course of a year."
Among the recommended activities are those on behalf of national social justice according to the spirit and vision of the Torah and the prophets; redemption of captives such as Jonathan Pollard; educational and Torah activities; face-to-face activities with other Jews for the purpose of bringing them closer to G-d, Judaism and the Land of Israel; and kindness to the sick, elderly and others.
"And thus we will thank, praise and sanctify G-d for His salvation," the organizers conclude.
Rabbis supporting the initiative include Rabbis Yaakov Ariel, Yigal Kaminetzky, Moti Elon, Shlomo Aviner, Shmuel Tal and Yuval Cherlow.
I would just like to add that just because it's permitted in these circumstances doesn't mean that vows should be taken lightly. Vows are very serious, and should only be taken with extreme caution. One should do a serious Heshbon Hanefesh to see if one can truly handle this kind of commitment before undertaking it.
Update: As Yitz pointed out in the comments, this is being done "without a vow" (bli neder).