[Droid Incredible Q&A, Help & Troubleshooting] meadowsjared:
First of all, I gotta give props to Albinoman for getting the Incredible to where he has (Jellybean, on the Incredible!... wow!)

http://xdaforums.com/showthread.php?t=1778190

I've been following Albinoman's progress and while I was trying to troubleshoot the "low space notification" we're all too familiar with, I made a HUGE mistake.... I was using Albinoman's Beta 2, which worked great, but I tried restoring a nandroid backup and it failed, due to a corrupt SD card. Then, I tried restoring to another backup, which also failed. I then set out to run a scandisk on the SD card, so I shut off my phone thinking I could just boot back into recovery no problem right?!? WRONG!

After fixing the SD card, I was unable to even boot into recovery, I was getting the scary 5 vibrates of death, and I found this thread, which was half-helpful:

[HOW-TO] Fix 5 vibrate and black screen

http://xdaforums.com/showthread.php?t=1110865

It was able to get my SD card working (previously it didn't at all), but I still cannot boot without having a USB cable plugged in (otherwise I get the 5 vibrates and a blank screen).

The thread suggested using z4root to gain temporary root but when I try that, it just sits there for a very long time and times out.

Here's where my biggest problems come in...

I'm currently running Gingerbread 2.3.4, S-ON, and ADB is BROKEN on my phone

My HBoot is version 1.07.0000 (I was 0.92.0000, but now I flashed cmlusco's newer HTC rom, so it changed)

What I currently have to work with (what works):

Wifi, SD Card (new one of course), 3G, and I'm able to boot, and I got my bootloader unlocked!

I cannot find any way to root my phone based on my current situation.

I have found plenty of ways to root (I'm used unrevoked plenty of times but it wont help me now because ADB wont work with my phone because it's broken, but I can't fix ADB, because I can't get root, it's really a sad situation)

I've tried HTC's RUU official root method, other RUU's, and Unrevoked, but they all don't work because my ADB is messed up :(

Also, I don't know if this helps, I can use fastboot, and I was able to flash an image using fastboot commands, but it's been awhile since I've tried that, and I don't know of anything I can flash via fastboot to help my situation.

My main goal is, I just need to get rooted again so that I can re-flash Albinoman's sweet Beta 3 ROM which I've been unable to even try :(

Thanks for the help you guys are amazing!

UPDATE: It's FIXED!!!! Here's the short version of how (in case it happens to anyone else)

To start, my phone A: Would not boot B: Would not read the SD card, or EMMC, EVEN in recovery C: all USB was broken including ADB (but fastboot worked) and D: I managed to lose root by flashing like mad in hopes of fixing AB and C :P

Step 1: I flashed cmlusco's ROM that he suggested which got my hboot up to date etc...

Step 2: I went to http://htcdev.com/bootloader/ and unlocked my bootloader (BUT I skipped straight to step 8 (the fastboot part, since everything before that was a waste of my time since my USB/ADB was hosed))

Step 3: I flashed this recovery image and ran "fastboot flash recovery recovery.img"

Step 4: I downloaded superuser and loaded it through recovery, now that my SD card worked :)

Step 5: I then was able to do the following in order to fix the USB/ADB problem:

using this file and this file and running them in an android emulator app I downloaded from google play (since my USB was broken)

Terminal emulator & ADB commands:

su
cat /sdcard/flash_image > /data/flash_image
cat /sdcard/mtd-eng.img > /data/mtd-eng.img
chmod 755 /data/flash_image
/data/flash_image misc /data/mtd-eng.img
reboot

(credits for this to this thread)

Step 6: I was now fixed, so I just wiped my phone and flashed Albinoman's Jellybean ROM because it rocks! :D

Thanks to tiny4579 and cmlusco for both of your help! :D