I read somewhere that they are being shredded so that no usable pieces can find their way into Iranian hands to be used to keep the Iranian F-14s in the air.
I read week or so ago that the Iranians are getting parts from russia for their F-14's. They have replaced the engines with SU 27 type, replaced the radar and adapted several russian missles to work with the tomecat.
I'll see if I can dig up the article later on my break.
Bottom line is they are flyable, basically they are the tomcat but they are using russian parts to keep em in the air and since they haven't really flown them much the airframe should be in pretty good condition. The article didn't give details on performance with the russian equipment installed