It would be useful to have the form for updating the fault, or recalculate end points or length from one or the other. The update fault, isn't working properly and I'm not sure what to update - lat/lon end points or length of fault. Neither seems to work quite right. One should be derived from the other - it an end point is updated, then the fault length should be updated. If the fault length is updated, then the endpoints should be updated.
Screen shot of the page having problems.