"Duties of Article V convention delegates. Describes the duties of delegates and alternate delegates to a convention called under Article V of the Constitution of the United States. Provides that a vote cast by a delegate or an alternate delegate that is outside the scope of the instructions given by the general assembly is void. Provides that a delegate or alternate delegate who votes or attempts to vote outside the scope of the instructions given by the general assembly forfeits the delegate's appointment by virtue of that vote or attempt to vote. Provides that the call by the general assembly for an Article V convention is withdrawn if all delegates and alternate delegates vote or attempt to vote outside the scope of the instructions given by the general assembly. Provides that a delegate or alternate delegate who knowingly or intentionally votes or attempts to vote outside the scope of the instructions commits a Class D felony. Establishes an advisory group to evaluate whether a delegate or an alternate delegate has acted outside the scope of instructions."
http://www.in.gov/apps/lsa/session/billwatch/billinfo?year=2013&session=1&request=getBill&docno=224
That's nice - but has no teeth. Just like a state cannot force a US Senator to vote a certain way - and has no authority (via legislation) to recall or sanction said Senator - the line has already been drawn. Once a delegate is sent - the state has no control - no matter what the state's "law" says. This has already been hashed out by folks far more constitutionally literate and studied than most on FreeRepublic