ran m48 l10:

>>>g28
SENDING:G28
>>>M48 L10
SENDING:M48 L10
M48 Z-Probe Repeatability test. Version 2.00
Full support at: http://3dprintboard.com/forum.php
Mean: 1.603975
Standard Deviation: 0.017307
echo:endstops hit: Z:1.59

it did move in both x and y + and - from where it started near the middle of the bed.