Is this the position prince takes when disowned by royal family for being improper?
I believe the answer is:
out of line
'improper?' is the definition.
(thesaurus)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for out of line that I've seen before include "Beyond the accepted bounds of one's position or authority - crooked?" , "impudent" , "Exhibiting unacceptable behaviour" , "Behaving badly" .)