Yup Spatulata seeds most probably.
I am not sure about the rest of your question, but if you want to pick them out, why not? Try blowing them off or just picking them off one by one, don't worry too much about the ping leaves, but try not to damage of course
My connection slow now sorry didn't get to see the whole no. 2 picture, but I don't think it is much of a problem about plant growing on the mother plant, but if you like again try to pick the small one slowly and then plant someplace else
Also if you still have flowerstalks of Spatulata, time to cut it off and put in plastic bag and shake to collect seeds
TTFN
Arvin