As a general FYI, it's the torque generated by having the direction the P faces and the direction of application of force (fall) not aligned that causes non-recessed Ps to fail. These were almost certainly safe given someone has clearly had the courtesy to test them for a number of fall directions already :) If you're ever slumped onto an RP (at a piddly 4kN) then you should feel comfy whipping on these.
Also, from my experience 9/10 of the effort of removing glue-ins (properly) is the removal rather than the replacement. Given you're apparently too time-poor to finish the job, I'm curious how you removed these bolts. Did you hack saw them off (razor sharp and flush-ish) or heat them up and pull them out?