AIADMK didnt pull Congress
ADMK didnt call congress for any alliance. Amma did a big U turn
Few weeks back,
Jayalalitha the AIADMK's Amma openly called Congress for her alliance.
But last week, the AIADMK leader, in a statement, said she had only cautioned the Congress not to get into the quicksand along with the DMK, which was facing the wrath of the people for its anti-people activities. Considering the long - time friendship between the AIADMK and the Congress and with good intention, she had advised the Congress to come out of the DMK-led alliance in Tamil Nadu, Jayalalithaa said, adding, ''I never invited the Congress to come back to the AIADMK alliance.''
Reason that can be : (Jayalalithaa Future plan)
As we know in the coming General Election 2009, Congress and the BJP led NDA will have a tie in the centre, or none of them including the Third Front will not be able to come to power. And it is expected in TamilNadu, and ADMK alliance might get 20+ seats ie., 50% of 40 including pondy. If Jayalalitha is lucky - either PMK joins ADMK or DMDK(Vijayakanth) stays away from Congress/DMK then Jayalalitha's share in the 40 seats will increase to even 25 to 30.
In that case, she might use this to woo Congress as its life or death for them....
[ Source ]