To restore connectivity,you could try unplug/replug,and a hard reset of the phone(hold power button until it resets)
I Personally recieved "cannot load...not enough space" errors when trying to run ruu.zip,and ended up having to run the .exe file.
Sorry,I don't have any real experience or knowedge of manipulating android from a Mac. Based on the issues I had,however,I'm afraid you may need to borrow a pc and run the .exe file.
If you're on older firmware,I might suggest trying to restore a stock nandroid and going s off to get back to stock before running this ruu. You can even replace your recovery with a stock one and.try clear storage and factory reset options from hboot. That will usually fix flaky,unstable data
The Delivery Guy
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