It booted into recovery from the command prompt nice and easily, mounted nicely, and just flashed the ErisMTDNuke_v0.9.zip and I didn't get any error messages at all whatsoever. Copied all the files and it's complete.
Just flashed the GSBv3.5-ODEX-cm-7.1.0-RC0-Eris-signed.zip and it was a success as well.
yay! another "bricked" eris brought back from the dead. thats awsomwe

congrats on a great job with this,its not something alot of folks would have been able to do. most would have just thrown it in the trash can and been done.
definately kudos to you for not giving up on the lil guy,lol.
Mainly I'm just waiting to hear back from doogald and/or scotty85 to know whether or not there is anything else I need to do on the subject of the safety of this phone. If I understood everything correctly I was only flashing GSB to make sure it would work, and that there was more to do recovery-wise. I don't know for sure though.
So I'll be patient, and hope to talk to one of them soon.
sorry,i fell asleep too

i cannot think of anything that you should do now,except unplug the phone from the pc and check:
1)that it boots on normally when you power it on
2)that power on/volume down will take you to hboot
3)assuming that #2 works,that you can get to recovery by selecting it with the volume rocker and power buttons
other than that... just make sure that you do not use rom manager or clockwork to make backups,flash roms,etc. as was said,Amon's recovery is much,much safer for the eris. ive flashed more roms than i can count on mine... not to mention the numerous times ive unrooted and re rooted it for various reasons,plus my various adb experiements

now that its working again,it should be a tough lil bugger. the reason ive never have issue is that im cautious... i check md5s,and ive only used clockwork a couple times(for specific reasons) and those times i was even more cautious than usual
just double check the md5s of things you want to flash,and only use amon and you should be fine
Is there any chance that you could look into the possibility of putting stock sense on a rom, like making it an optional .zip to flash or something? Doesn't even matter what version, I am just not big on using 3rd party launchers. I know I'm just one guy though so please don't take it as I'm trying to demand or be greedy. I respect rom developers and the other guys in this thread especially for their knowledge and when it comes to these devices I will respectfully take the position "noob". The sense thing is just an idea I've had.
first off,by "stock" i assume you mean htc stock... to me,"stock" would be the AOSP pure gingerbread that you were tryin to install when everything went haywire

sense is htcs skin and ui that is mixed in with the AOSP code.
if your GF wants a sense,stock type rom... does she need gingerbread? xtrsense is an excellent stock type rom you could put on for her.
as has been mentioned,GSB and CCM7 are also both excellent roms that are cyanogen mod-slightly modded AOSP. im personally a huge fan of cm and try to run it on all my phones as my daily driver rom.
there is a port of a port of a sense GB rom for the eris:
http://androidforums.com/eris-all-things-root/338756-gin-sen-tazz-gingerbread-sense-rom.html
it actually does work pretty well,but its not somethin id neccessarily reccomend that you put it on a phone for someone who is not phone savy. the rom itself is complex,and huge... wich is is one of its biggest issues. doogald found that once he installed his main,core group of "cant live without" apps that the phone only had about 28 mb of free memory. you would have to clear caches constantly to keep from running out,and as time goes on the rom will prolly become slow and laggy,with launcher redraws(meaning everytime you push the "home" softkey the homescreens will have to reload as the phone shuts down the launcher to try and free up memory)
but feel free to give it a shot and see what you think of it.
i still wish CS would whip us up a cm-free AOSP 2.3.4 rom. it would be an excellent eris choice... with the smoothness of his other roms,and it would have a tiny footprint-leaving the eris with more much needed memory.