The Cleveland Cavaliers' season is sliding toward serious danger, if it's not there already. General manager Chris Grant just knows it needs to stop. Now. Making a rare midseason appearance before the media to address some of Cleveland's most pressing issues, Grant said he's troubled by the team's will in recent games. "The lack of effort is just not acceptable," Grant said following Wednesday's practice. "It's not who we are and who we want to be. It's got to be addressed head on. There's no excuse for that, but we've seen our guys compete and execute consistently and that's really what we've got to do a better job of." Cleveland completed a 1-4 homestand with a 100-89 loss to New Orleans on Tuesday night. Following the poor performance, which came after an even worse one against Phoenix, Cavs coach Mike Brown questioned his team's motivation. "Our competitive spirit is non-existent," said Brown, whose second stint with Cleveland has been a disappointment through 45 games. "Maybe I need to shake some things up." Perhaps prompted by Brown's remarks, Grant made himself available to reporters during the season for the first time in more than three years for something other than to comment on a trade. Grant said there is plenty of blame to be shared for Cleveland's sorry state. The Cavs are just 16-29 and currently out of the playoff race in the weak Eastern Conference. "We're all accountable for it, including myself," Grant said. "It's frustrating. It's disappointing to our fans. The fans deserve better. That's hard, but we've got a very experienced, creative dynamic group of people who are working on a daily basis to help us become more consistent. We know it's there. Our guys, they're learning, they're growing and we have expectations for them and for ourselves. "It's disappointing. We feel that every day." Meanwhile, the mystery of Austin Carr's retired jersey banner continues to linger. The large No. 34, which was hanging from a walkway high inside Quicken Loans Arena, turned up missing Tuesday night when Cleveland hosted the New Orleans Pelicans. The team said the banner was in place on Monday night for a pro wrestling event. The Cavs are continuing to investigate and plan to install a new one in time for the next home game. Carr was the first player drafted by the Cavs. He played nine seasons for Cleveland and had his jersey retired in 1981. He currently works as a TV color analyst for the club.