Try dmraid, it's been designed to take over various formats of hardware RAID cards.
It recognised the disks in an ASR array, but the type is "unknown" and it fails to assemble with "Undefined RAID type (null)[1] on asr_". So I don't think that worked sadly.
EDIT: The RAID card I had supported RAID 5 and dmraid doesn't, that's probably why it's not working.
I think you may just be able to run mdadm --discover and follow your nose. I haven't gone digging enough to find good documentation.
I tried that once from off of an HP raid controller and got nada. I hope it works for OP.
I could not find a --discover parameter, but I tried --assemble --scan and it couldn't find a super block.
It feels a bit frustrating to have all the data here but no way to access it, maybe a tool will pop up at some point if I hoard the disk images.
Thanks for the suggestion though.
update: I managed to get it working, look at the edit
Thank you for sharing updates about your progress. Good luck rummaging around in found.000. :(
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