disable loading of native images in .net process?

[0xall0c]

i am trying to hook the parsing engine of powershell, which is present in System.Management.Automation dll, for that i have hooked the jit compilemethod, but the problem is powershell loads native image of this dll instead of the regular assembly, is there any way i can force the loaf of regular assembly and not the native image? i have tried COMPLUS_ZapDisable but it is not working either