Altiris Agent v7.1 Uninstall problem.

I use the below batch to uninstall Altiris Agent successful.

REM Uninstall All NS Agents

"C:\Program Files\Altiris\Altiris Agent\AeXAgentUtil.exe" /UninstallAgents
"C:\Program Files\Altiris\Altiris Agent\AeXAgentUtil.exe" /ResetGuid
"C:\Program Files\Altiris\Altiris Agent\AeXAgentUtil.exe" /Clean
RD "C:\Program Files\Altiris\Altiris Agent" /s /q

But machine reboot it is automatically reinstall into my machine.
I've tried use batch to uninstall again and unplug network from machine it is found that no reinstall the agent.
I can't uninstall Altiris Agent completely remove from my machine when have network.