Windows Phone game Galaga legions DX remove XBL Service

Windows Phone marketplace link:
Http://www.windowsphone.com/zh-HK/apps/28bcc57b-e1d8-4f61-a508-fc5b2b91157d

Xap package:
Http://www.wpxap.com/thread-476471-1-1.html

The modification is simple. initialize the isneedgamerservices variable to false.
The IL modification of UI. dll is as follows:

*** ui.org.il	Thu Sep  6 12:09:42 2012
--- ui.il	Thu Sep  6 12:10:34 2012
***************
*** 25510,25516 ****
      IL_0013:  stsfld     bool ui.NetWorking::isLicensed
      IL_0018:  ldc.i4.0
      IL_0019:  stsfld     bool ui.NetWorking::s_hasUploadLeaderboards
!     IL_001e:  ldc.i4.1
      IL_001f:  stsfld     bool ui.NetWorking::isNeedGamerServices
      IL_0024:  ldnull
      IL_0025:  stsfld     class [Microsoft.Xna.Framework.Game]Microsoft.Xna.Framework.GamerServices.GamerServicesComponent ui.NetWorking::s_gamerServicesInstance
--- 25510,25516 ----
      IL_0013:  stsfld     bool ui.NetWorking::isLicensed
      IL_0018:  ldc.i4.0
      IL_0019:  stsfld     bool ui.NetWorking::s_hasUploadLeaderboards
!     IL_001e:  ldc.i4.0
      IL_001f:  stsfld     bool ui.NetWorking::isNeedGamerServices
      IL_0024:  ldnull
      IL_0025:  stsfld     class [Microsoft.Xna.Framework.Game]Microsoft.Xna.Framework.GamerServices.GamerServicesComponent ui.NetWorking::s_gamerServicesInstance