The preseason hero’s stall in the Denver locker room was vacant as a small convoy of reporters approached, so the Broncos began a chorus summoning him to enjoy his moment with the cameras. “Albert! Albert!” they called out toward the showers in mocking desperation. Eventually, a beaming Albert Okwuegbunam emerged. Were those his last moments to savor as a Denver Bronco? The fourth-year tight end, whose entire career has been spent in Denver, is one of the team’s most ambiguous and intriguing decisions in the final days before the Tuesday deadline for NFL roster cuts.