Are you sure that they came out whole? The outer coatings of Asacol and Lialda are manufactured to be indigestible, and they have a pin-hole which allows the medicine to come out. When on Asacol, I'd regularly have tablets of Asacol in my stool. My doc said it was normal for the "husks" to come out. I didn't believe him, and I once fished one out (gross I know), but it just a husk, and not the whole pill.
36 y.o. male
Diagnosed w/ moderate UC in May '06
Asacol, Florastor, VSL#3, Wellbutrin XL, Prozac, multi-vitamin, Allegra, Lialda, Colocort enema, Prednisone (trying to taper down)