Let me start with that which is something am sure you believe in (Principle), expanding on it gives;
The moment you begin thinking of ways to get "easy wins" is the moment you become corrupt!
Now that is a fact and that is exactly what is happening with CDM and this Lowasa thing. Look for an easier way to win whatever the cost. That guy on your profile picture, do you know who was his opposite during his time? Malcom X. They all wanted the same thing but they had fundamental differences in the principals on how they are going to get there. Malcom X believed on the whatever it takes approach while that guy on the picture believed on taking the morally correct path to victory however hard that path.
In these few days, CDM has successful managed to transform their mission from delivery of a better, democratic and fair Tanzania to take CCM out whatever the cost and worry about tomorrow when tomorrow gets there. While that may turn good (and MM finished his post saying, "i remain a skeptic"), but with invitation of Lowasa you are guaranteed for a CCM like tomorrow or most likely worst.
What makes Lowasa powerfull is what comes with Lowasa. And that is TeamLowasa and every other shady character that CDM has ever pointed finger at. You don't just get Lowasa, you get all of that. That becomes part and parcel of a democratic CDM. A new CDM member and an old CMD member all have the same rights. And these people are not your regular CMD members, these are guys that can exert a significant influence and they are coming in CMD in a position of power. They are not being helped by CDM, they are helping CDM take on CCM.
Once Lowasa is president, he is president. Do you even know the kind of power a president of this country has? To think that CDM will be able to control him through party meetings is simply being naive! There is a right and wrong way of doing things, that is a fact. Getting bad people to fight other bad people for you is a good strategy except that keeping the bad people as your leader as they defeated the other bad people is simply suicidal.
I have read some other arguments that, this is just to change the political dynamics and prove that a ruling party can be replaced in TZ. But that is simply explaining hard issues with simple whatever fits answers (the ones that CCM ministers always gives in the parliament). You cant just turn the future of the entire nation into a big SOCIAL EXPERIMENT and see how it goes!!! And to expand on that, this kind of experiment has been done before in many countries in Africa with complete total failure. And it is a scientific fact that, an experiment which takes same inputs under the same conditions will ALL THE TIME GIVES THE SAME RESULTS.
What is wrong with People!!!