Let's face the facts. He's too slow now for his style.
Chuck fights w/ his hands mid-level (Chest-Hips) area all the time. Wide open in the head. He could get away from it before because he had quick footwork and an incredible sense of distance and timing.
As of late however, he's become much slower and he looks sluggish. His head is Always open and he only raises his hands against flurries. The problem is that he's always open to one-shot KO hits. And all those hits to the head are having some long-term effect too. Have you guys heard any of his interviews? He talks weird nowadays. He slurs and mumbles his words all the time.
In my personal opinion he should learn to box properly and start getting some physical defense (Ie. boxing basics...KEEP YOUR HANDS UP GODDAMNIT.) in his striking game. I cringe everytime I see him circling his opponent w/ his hands around his chest/hips area. I'm just waiting for that hook that'll put him out.
His style was unique and it worked for him in his prime but it's really time to change and accept the fact that he's not as fast or as agile as he once was.
His career is starting to go the way of Ken Shamrock's. If he could win one more big one and retire IMHO that's ideal.