While it goes against my principles, I will offer some suggestions.
Don't use a BATch file!
You need to create a token file for RUNNAS.
Copy both RUNNAS and the generated token file to the local PC.
RemoteExec RUNNAS and pass the tokenfile as a parm.
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.