Iranian regime conspiring a second coup - Interpretations

Following 16 Azar (7 Dec Students Day) protests in Iran, various news are circulating around iranian websites and media. These news focus around:

1) burning of Khomeini's poster during the demonstrations and widespread propaganda by the iranian regime against this action. Some claim that such action was initiated by regime elements themselves in order to justify upcoming hard measures by the regime against the green movement
http://www.youtube.com/watch?v=T1eMN8KocLs

2) presumed announcement of a number of army commanders warning to join the people in case of further brutality against protestors exterted by the revolutionary guards.
http://www.ismanews.com/?p=847

3) consipiracy against the opposition leaders and planning of their arrest during presumed meeting held yesterday between leaders of the regime inside "Beit Rahbari" (residence of the Leadership of Iran)
http://www.facebook.com/notes.php?id=100000143192380

4) army, revolutionary guards and all armed forces ordered to go on maximum alert since friday 15 dec. The extent of such security measure has been compared to that applied during war time and in case of foreign invasion of the country.
http://www.ismanews.com/?p=905

According to Mohsen Makhmalbaf iranian activist and film maker, 16 Azar demonstrations has caused a crack among regime leaders regarding their strategy. According to his sources, on one side Ahmadinejad, Mojtaba Khamenei (leaders son), Jafari etc are insisting to take harder measures against the protests by carrying out a sort of a military coup including the arrest of the leaders of the Green movement and and taking over of country's situation by the Revolutionary Guards.
This group warn that considering the trend of protests, there is serious risk of regime overthrow during next protests scheduled for Moharam period (starting on 25 dec for a month or so)
On the other, Khamenei itself, other revolutionary guard members fear that if they should arrest Mousavi he will become the symbol of Imam Hossein and Khamenei will become the symbol of Yazid and it will be even more difficult to control peoples rage during the upcoming Moharam ceremonies*.
http://hiss.zzl.org/?p=3534
* http://en.wikipedia.org/wiki/Mourning_of_Muharram

ISMA news agency interpretation on recents events is that the the burning of Khomeini's poster has been an initiative of the regime itself to set the ground for and justify the arrest of oppostion leaders. According to ISMA sources some clergies lead by Mesbah have managed to convince the leadership to allow Revolutionary Guards to take total control over the situation in order to resolve all problems and restore the situation. According to ISMA, news on the military coup against the people has been also comunicated to top army commanders ordering them to remain on maximum alert and keep their operative forces inside their headquarters so as to minimize the risk of army joining the people during the coup. Following this, army commanders issued the statement (point 2 above) warning that in case of coup and brutality against people, they would be joining the protestors.
http://www.ismanews.com/?p=905