Should i be worried? Valve cover breather fitting popped off?

[ANVIL]

Testing my car, rb25det s13, yesterday at the local drag strip and felt a power loss mid run and on the way back to the pits had underhood smoke. Checked it out and the fitting off the valve cover popped off and got oil everywhere. Should i be worried? Can i weld it or get a pressin fitting and be ok? Or is this a sign of something else that needs to be addressed?

[ANVIL]

Pic for reference

http://img.photobucket.com/albums/v708/ANV1L/Mobile%20Uploads/20170513_225501.jpg (http://smg.photobucket.com/user/ANV1L/media/Mobile%20Uploads/20170513_225501.jpg.html)

Still running stock pvc to intake manifold on intake side vc. Intake side vc fitting is the one that popped off. Pulls off really easy.. always has. Its T'd like the factory but goes through a catch can before going to the intake.

Any opinions??