Remand for recalculation of drug amounts was a limited remand that did not require a new hearing, and was appropriately resolved by amending the opinion; deft's presence at earlier sentencing satisfied the statute. Amounts appropriately calculated by a preponderance.
http://www.opn.ca6.uscourts.gov/opinions.pdf/18a0146p-06.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.