Put them ALL on indefinite leave also. RIGHT NOW and Every. last. feckless. one. of. them. If anyone readily admits to a willingness to undertake 'unethical behavior' for a brother they've already copped to a crime. Cut them off. Put them in a decades long time-out.
Here's a clue, for all those chicken-shit cut rate versions of a second rate spunk bubble... Michael Corleone WAS NOT the hero of the tale. Being a brother to someone shouldn't automatically make help equivalent to abetting a crime.
'Helping out' should mean being there, with them, as they march themselves into the police station, admit to the crime and accept their punishment. Anything else is bullshit posturing.
Here's a thought, with some delicious side of justice to it:Just like was done with morally compromised women--real, imagined, co-incidental and in between--back in the day; send them to a convent and make them take a vow of silence. Put them in orders--the Holy Order of the wholly ridiculous. Brother Yglesias, your penance is to, finally, and at long last, STFU.