United States v. Hector Rivera-Martinez, A/K/A El Men

SELYA, Circuit Judge.

We are called upon today to revisit the tribulations of defendant-appellant Hector Rivera-Martinez following his guilty plea to four counts of what we once described as “a multi-count indictment ... of a huge drug ring allegedly headed by Rivera-Martinez.” United States v. Pellerito, 878 F.2d 1535, 1537 (1st Cir.1989). 1 In our previous encounter with Rivera-Martinez’s case, we affirmed the district court’s refusal to allow him to withdraw his guilty plea, id. at 1542-43, but ruled that, as a prelude to sentencing, the court should have granted Rivera-Martinez’s motion…