Also signed up just to say thanks to everyone for their efforts.
I hard-bricked my stellar after rooting and trying EZunlock1.2 since i was on JB4.1.2 and
thought it safe. Hardly, should have heeded the warnings.
So i managed to get to download/bootloader mode after finding the extSDcard boot hack
and flashing ./stellar-unbrick.img to the class10 extSDcard.
I couldn't get heimdall to work on linux, but it would boot to 'custom' so I was able
to use adb to push aboot.mbn from billards MA1_aboot-MA1_kernel_and_TWRP2.5.0.0
That restored my aboot and was able to boot w/out the extSDcard
Once booting got straightened out, I was able to push the boot and recovery images
I wanted to use loki but was not confident that it would
use 0p7 and 0p18 (very little by way of manpages or --help info) so i ended up
using trusty dd to put them into their respective partitions (only after finding out
that .mbn and .lok files could be dd'd)
Now i can happily say that reboot got me the 'billard412 pot
leaf' splash and twrp!
Woot! Back in the game and (almost) tempted to go get a used S3 as the taste in my
mouth for Samsung just melted a bit.
Thanks again folks, keep up the good work!