I suppose you can always hire an attorney and fight to withdraw the plea deal. Then, you get to go to trial and face the full force of any and all criminal offenses that the state has to charge against you.

Understand that criminal confinement does not solely require that you move them, but that you "substantially" interfere with the liberty of another. When you use a weapon or cause serious injury, it becomes a class B felony. You apparently held the victim at the point of a weapon (or caused great injury) and moved him from one part of the house to another. What part of that does NOT fit the definition of the the section which essentially defines the crime of Criminal Confinement as substantially interfering with the liberty of another, or removing a person from one place to another, without their consent.

IC 35-42-3-3
Criminal confinement
Sec. 3. (a) A person who knowingly or intentionally:
(1) confines another person without the other person's consent; or
(2) removes another person, by fraud, enticement, force, or threat of force, from one (1) place to another;
commits criminal confinement. Except as provided in subsection (b), the offense of criminal confinement is a Class D felony.
(b) The offense of criminal confinement defined in subsection (a) is:
(1) a Class C felony if:
(A) the person confined or removed is less than fourteen (14) years of age and is not the confining or removing person's child;
(B) it is committed by using a vehicle; or
(C) it results in bodily injury to a person other than the confining or removing person; and

(2) a Class B felony if it:
(A) is committed while armed with a deadly weapon;
(B) results in serious bodily injury to a person other than the confining or removing person; or
(C) is committed on an aircraft.


In any event, it is pretty hard to go back and change a plea deal that has already been entered by the court. I suppose you might stand a small chance if you have not yet been sentenced, or if the deal has not yet been presented to the court, but that's iffy. Also understand that any allocution you made in court confessing to the crime (usually a requirement with a plea) may well be used against you at any future trial to show your guilt. But, if this is a path you wish to pursue, knock yourself out.