239 Is currently hostile and too big a threat, Foundation just can't give her orders to do something now, she's currently in a state of comatose-drug induced stasis for everyone's protection. 682 Actually also murdered another Humanoid SCP that could do the same effect through 'lucid-dreaming':
http://www.scp-wiki.net/scp-1237
In 682's official destruction testing Log:
Item: SCP-1237
Tissue Test Record:
N/A
Termination Test Record:
A deliberate containment breach was induced which a SCP-1237-1-L was permitted to observe from a safe distance. Thirteen security personnel were killed before containment was re-established. Subject was dosed with ████████████ to encourage REM sleep and onset of SCP-1237 and instructed to dream that SCP-682 was a small housecat with no special abilities, and that the security team had been able to destroy it easily.
7 seconds after onset of SCP-1237 event, subject began to seize violently. Subject was declared dead after 32 seconds. Autopsy discovered the subject's body covered with scratch and bite marks and infected with bubonic plague, toxoplasmosis, and subacute regional lymphadenitis ("cat scratch fever"). The bodies of the deceased security personnel displayed similar characteristics. A small housecat was found in SCP-682's containment chamber cleaning blood off of its coat; said cat regenerated into SCP-682 within 3 hours.
Hail to the lizard