Alohamom,
I'm sorry that you've been through so much and think you're flaring again.
They can remove your rectum and parts of your small intestine, if the disease is active there. We have approx. 22 feet of small intestine and need some of it in order to absorb nutrients [not sure how many feet], but you don't need a colon or rectum. The more small intestine you can keep the better. Please keep us posted on how you're doing and what you find out.
God bless,
Cecilia