Removal of these large logs and wood debris would be wise. It would prevent this debris from causing possible issues with the Radial Gates (skin plate, seams, shock impact to Trunnion & Radial Gate, ...)
Here’s Robert Bea’s revised root-cause analysis document, with attributions:
https://www.documentcloud.org/documents/3676605-Robert-Bea-Oroville-Spillway-Failure-Root-Cause.html