Eleventh Circuit balks about consideration of post-sentencing behavior

In a per curiam opinion, the Eleventh Circuit in US v. Lorenzo, No. 05-16119 (9th Cir. Dec. 8, 2006) (available here) suggests that the district court’s consideration of post-sentencing behavior is never an appropriate consideration at a Booker resentencing.  Because Lorenzo is a short opinion dealing with a quirky (though perhaps quite common) re-sentencing situation, I do not want to read too much into its reversal of a district court’s lenient sentence.  But the Eleventh Circuit’s analysis hints that post-sentencing behavior is never a proper consideration, and I have a hard time squaring such a broad crude rule with the nuanced text of 3553(a).