A few comments.
"uterus is completely wrapped in scar tissue and is now attached to my abdominal wall" - Every surgical incision results in a column of adhesive scar tissue which spans and unites the skln surface, where the incision began, to whatever the deepest structure the surgeon handled, in your case, the uterus. This "ONE INCISION - ONE SCAR" concept put forth by Dr. E. Peacock of North Carolina is applicable in EVERY surgery case.
While it makes a patient feel better that her post-surgical pain are explicable by this seemingly "special" scar status - your situation is NOT unique. All Plastic surgeons who do a fair amount of Tummy Tucks have encountered many women with similar conditions. while the scar tissue between the skin and the muscle lining / fascia makes the separation slow initially, it has no bearing on the cosmetic results of a tummy tuck.
For the best result, the Plastic surgeon would need to place his tummy tuck incision BELOW your 2 C-section scars and hide it in the area of your underwear. In this way, these old scars would be removed with the excess skin of the lower tummy.
To learn everything you need to know about Tummy Tucks and Mommy Make Over, follow the comprehensive link below -
Dr. P. Aldea