Burns suck
He's glad Aya is away at college.  She shouldn't have to see his scars or smell the ointment he's long been sick of.  The nanites were confused by the EMP pulse the blast carried and he had to shut them down, which slowed his healing and made him do something only sobering up or failure ever could - feel his age.  The nanites keep him biologically almost as young as his wife, but in this rehabilitation process, it's not enough.  the nanites are not responding to his new instructions and the frustation and fatigue are starting to wear on his well-concealed optimism.  He keeps repeating the mantra - I will be healthy when I see my grandchild.  I've earned it.  Knowing Anya that grandchild was going to be very far off because there will always be more for him to do, and he will not ever pressure her oon the subject.  There have been larger problems then even the battle in the stock market for his own company.  there have been bigger villians, but whoever did this managed to find his Achelles' Heel and ally him or herself with Tony's worst enemies - time and his own body.

He sighs and tries a new code.