Tippies can be quickly adopted with immediate workflow benefits...
CTRL + Z = Undo
Reflex regret is common when getting to know Connect Care text automation tools. It is easy to pick the wrong SmartPhrase and then want to pick something different. Undo is available from the editing menu just above the note or letter content being edited (just like a word processor).
Faster, if hands are to keys, press the control key and the letter 'z' at the same time to undo the last action. (if using a Mac, make sure that you have the right key-mapping enabled)
If mouth is to microphone (Dragon Medical One), pause and say "undo that" or "undo last action".