Meshal wants to insure his own survival and may be now more motivated by increased problems in host country Syria. A deal that ultimately protects Meshal may be what he is after. I would say, take him out if he fails to release Shalit now, his choice.
India court gives New Delhi given 3 days to come up with plan to fight pollution (Reuters)
from the article: Palestinian sources: Hamas leader won't soften demands for Shalit swap