Traspie means to stumble or trip. If you have ever seen an old black and white video of Chachafaz you will know why they would call it traspie. Actually the traspie step is a triple step where we use quicks instead of slow beats in milonga. Play with the rhythms until you feel like you are a part of the song.
Take some time to play with this to put the moment of off axis and on axis clearly in your lead follow tool box. Take a few minutes and don’t rush changing axis move with your partner partnering, staying on the axis play with rotation, then accompanying all the way come off axis together. Practice, practice, practice.