Assuming Zawahiri isn’t the one dropping dimes.
Z and his egytians didn’t get along with al-libi (libyan) and the rest of AQ.
Z could have ratted him out and now can take over AQ completely.
I am doubtful that Z is in Pakistan. There have been many reports that he bailed for Somalia and Sudan years ago to get the muslim brotherhood in line.
However, Z is married into the Paki Pakhtun and that gives him protection and speaks to his staying in Pakistan.
However, AQ is going to Syria to team with the muslim brotherhood and create a platform there. Z would find his skills and connections much more valuable in that theater.
Lots of weapons going into Syria along the N coast by way of Qatar and Egypt.
Syria is going to be a balkan style blood bath and the Alawites are likely to be exterminated. Ethnic cleansing has nothing on religious cleansing.