According to the blogger's translation:
The Hizbullah source cited above says that the party is waiting for the Israeli reaction to Siniora’s plan before entering the discussion. The source, added, however, that they have information that Israel refuses “returning” the Shebaa farms to Lebanon. “Thus, the Israeli refusal to pull out of the farms and the Kfarshouba hills creates enough justification for the resistance to continue.”
Nowhere is it suggested that Hezbollah are "banking on" Israel rejecting Saniora's plan other than by the blogger. Chebaa farms has long been a sticking point; Lebanon have been limited in their attempts to disarm Hezbollah because of it.
From an
article earlier today on this subject:
The provisions do not spell out the order in which the steps must take place, but Saniora has said the government cannot spread its authority in the south unless the Chebaa farms issue is resolved. Israel's hold on Chebaa has provided Hezbollah with a rationale to maintain its arsenal and its "resistance" against Israel.The real question is why won't Israel cede Chebaa Farms to Lebanon and remove one of Hezbollah's rationales for staying armed?