Moto E Not Starting Properly After Changing runtime to ART
/data/property/persist.sys.dalvik.vm.lib contains the name of the runtime library you wish to use - libart.so or libdvm.so. So, you can switch back to Dalvik like so:

adb shell 'echo libdvm.so &gt;/data/property/persist.sys.dalvik.vm.lib'

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