Well there is no such thing as bi-polar and major depression. You can have bi-polar I or II with depressive symptoms, with/without psychotic features etc...but the whole premise with Bi-Polar is that you have extremes of happiness and depression. So hopefully the people close to him have more knowledge then what they are saying. Also, 16 klonopin is not close to indicative of a suicide attempt. IF combined with alcohol, it has a potential as both are downers; but most likely is just a deep sleep.
What I think is sad is that Dana terminates the contract before providing professional mental health treatment. Why not offer fighters the ability to have that help when they fall and see if they can achieve a level of functioning sufficient for the UFC. Dana basically just said, "Ya i gave him a contract, and i guess his mentals are too much so i terminated him because i cant do anything."(paraphrased obviously).
The reality is that fighters (boxers, MMA, etc) often have underlying substance abuse disorders/mental health needs as this is a very emotional and extreme way of living life. The LEAST Monopolizing organizations like the UFC can provide is counseling for their fighters. It's news like this and response's like Dana's that frustrate people like me (fighter and therapist) who understand the sport and the consequences of the successes and setbacks that the sport provides...just my .02