Did Glossip v. Gross modify centuries-old jurisprudence prohibiting involuntary waiver of constitutional protections in the context of method of execution claims?

QUESTIONS PRESENTED 1. Did Glossip v. Gross, 135 S.Ct. 2726 (2015), modify centuries-old jurisprudence prohibiting involuntary waiver of constitutional protections in the context of method of execution claims? 2. Does Stewart v. LaGrand, 526 U.S. 115 (1999), prevent a death-sentenced inmate from challenging a barbaric method of execution he was coerced into choosing by threat of an even more-barbarous method because he was prevented from meeting the of Gossip by state secrecy laws and procedural technicalities?