Something for the electronic wizzards

This question came up on Bimmerboard:

Hi

i took out my sword to replace the mosfets on them.
all 4 were fried. I removed all fet's and cleaned up the solder areas.

as a sanity check I measured between the 2 main big traces on the circuit board looking for shorts and measured about 52 K-ohms. looking for info I came across a website that said there should be infinite resistance between the two main solder areas.

trying to follow the various traces it appears that some resistance should/could be measured.

Can somebody confirm or deny the fact that one should measure infinite resistance with all 4 mosfets removed?
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Anyone can answer this question?
Additional info which might help
http://www.bimmerboard.com/forums/posts/136145/
http://www.bimmerboard.com/forums/posts/426626/
http://www.bimmerboard.com/forums/posts/355700/
http://www.bimmerboard.com/forums/posts/355705