Bunionectomy - pain in forefoot/big toe

I had double (both feet) bunionectomy surgery 18 years ago.  I have pins in my foot and my big toe (it was a "second degree" or something like that - not the most radical 3-break one, but the two-break one if that makes sense).  Ten years ago I was running 40-50 miles per week marathon training.

About three years ago, after I had let myself go and before I got back into shape, I was experiencing swelling and discomfort in one foot.  I went to the podiatrist who told me "be thankful you got 15 years out of your surgery."  That kind of left me PO'd because I thought the surgery was a permanent fix.  Silly me.

Fast forward to today.  Still running, but recently starting to mess around with my stride via "Chi Running" and new Zoot minimalist running shoes.  I guess that's not good - starting to experience pain in my surgery areas. Stabbing pains. 

Has anyone else had a similar issue and what was your outcome?  Surgical re-do? Stay with regular running style and cushioned shoes?  I am a neutral runner with high arches.  Have never really had any problems with my feet (outside of my surgery, which was a blessing at the time because my bunions were so painful walking was difficult).

THANKS!