Your reference to the reason charge against Tsvangirai is critical. The trial is set to begin in a few weeks, at the time that the cricket matches were to be played in Zimbabwe. What a time to have the world focus on Zim and what an opportunity for the MDC to bring people to the streets. With food riots threatening, ZANU-PF has hanged its self in the world court of public opinion, and is being cut off from foreign aid and trade.
Someone must have figured out that the world is telling ZIM to take a flying leap.
Or it may be that the top generals are hearing stirrings of a coup from their mid-level officers.
Who knows ? But this indicates a weakness on the part of the ruling party to make this offer.