Yeah, this refusal is mind-boggling. Saddam is evil, not crazy or stupid. What on Earth can he be thinking? These al-Samouds are virtually meaningless to his warfighting abilitythey're converted SA-2 SAMs, with a payload equivalent to maybe ten artillery shells. Heck, if Saddam were really smart he'd have built these toys simply to have something to give up. If he let Blix take them away, the "peace in our time" crowd would almost unquestionably carry the day, and any threat of war within the next year (at least) would vanish overnight, buying him time to finish his nuke.
Brining down Saddam over the al-Samoud is like busting Al Capone for tax evasion. If it gets the job done, well, so be it, but the whole situation is faintly absurd.