Sounds ugly that your recovery is gone and that the one you build does not work. Somewhere, it has been discussed whether an image of the recovery could be shared because it may not contain blobs, but there was no proper conclusion and I didn’t find a shared stock recovery image in the relevant topics. You could build the FPOSOS yourself and gain a recovery image (and a whole working ROM) this way. There is also an experimental TWRP recovery image, but this may not be suitable for your case. 
If you have a recovery then, you could try flashing it via fastboot:
$ fastboot flash recovery .../recovery.img