I'm not sure what you mean by the pins busted, but you have to ODIN the EL30.tar so if your USB isn't working I don't think you'll be able to ODIN back to complete stock.
But if you can use ODIN, then yes, flashing back to EL30 (or I guess any previous build) will allow you to update OTA to FC09.
pins busted = My phone charges fine but the phone<->USB cable<->computer connectivity doesn't work for ****. I've tried everything. Eventually i was able to flash using the phone only after rooting with Framaroot. I put together a HowTo in the Epic 4G General forum.
Ok thats good to know OTA to FC09 still works because if I wanted to go back to stock I would need to flash a community EL30 via CWM then OTA update to FC09.
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