Well there is no single cure because every Crohns person has different symptoms. I think its important to treat each problem separately and not get stuck on typical cures.
Instead of flagyl you can try xyfaxan.
Instead of remicade you can try humira.
Instead of scd you can try to figure out which specific foods give you the most problems.
Also, with Crohns its very important to drink lots of liquids but try different ones because some drinks may do more harm than good.