1: A person should pretty much not leave any evidence of something they wouldn’t want others to see or know. It’s once thing saying it to someone in private. Sending it through any written medium is plain foolishness. As a wise person said “zei nisht a nar mit a tzetel”.
2: Never send an angry text message. Especially to someone that you need to be on good terms with. I have heard of people regretting it big time.
3: Now that the messages were already sent. What should you do? Why do you need to ask anyone in the CR? Simply ask the person to delete them. Nothing wrong with asking. Do they have to delete them because “they belong to you?”. No, they don’t. Words do not belong to you – even spoken ones – after they are spoken to sent out.
Speech has been compared to an arrow: once the words are released, like an arrow, they cannot be recalled, the harm they do cannot be stopped, and the harm they do cannot always be predicted, for words like arrows often go astray.