Why not, that is as bright as saying why have rules?
I yield to no one when it comes to strict standards of conduct and accountability, regardless of party, but automatic bouncing over an indictment, which is a mere charge, when circumstances might suggest a partisan witch-hunt (and Texas seems to have had a history of that kind of thing; one perfervid prosecutor nutter in Austin went after Kay Baily Hutchinson), where it is reasonable to assume there will be no conviction, strikes me as blunderbuss approach. Something more tailored to the specific facts seems more appropriate. Perhaps a secret ballot of the party membership about what to do might be the ticket. Of course, if there is a conviction, then the guy should be bounced.