What he said is:
-You must be adventurer as main class and have paladin subclass
-Use angelic icon with paladin subclass and choose "cancel subclass" and when you pic a new subclass, you must choose treasure hunter one (?)
-After this the angelic icon will be stucked in adventurer class (i guess this must only work on crappy java servers)
at least that is what i get from his post xD