Crack in bricks where old door was.. Repair possible?

[SteveMack]

Had an issue with blockwork between the garage and the house, the old door has been removed but the bricks are cracked from top to bottom, I sense the builder wacked the door frame to try and remove it.  Sorry for unrotated photos, they are right way up on pc but still show sideways on here!

 

Is there a product I can insert in a needle or something into the blocks to hold them together?  Not really supporting much, just the inner leaf near a wall with the roof trusses on, but there's no truss directly above these.

 

Alternatively can I put the door on the inner cavity wall which is undamaged?  We have a low threshold coming with the door if that helps?