I feel your pain. I had one last wheel to bleed, thought there was plenty in the reservoir. Then I dropped the wrench and couldn't get it back on the bleeder before air got in the system.
@#$@#@$&*
Once air is in the system you REALLY need to cycle the ABS to get all air out of the system. Either ISTA or one of the better code readers that can run the process.
I had done a plain pressure bleed of the system twice and still had a touch of mush in the brakes. It took 3 rounds of ISTA bleeding, and 2 full liters of Pentosin LV, to finally get the pedal back to normal performance.
Plan on going through a couple liters of brake fluid when chasing air. You may even want to consider cheap fluid, and then a final replacement pressure bleed/flush with good stuff once the air is finally gone. Then again, the Pentosin LV is ~$15/L at Autozone, so don't go too cheap. LV is WAY cheaper than Motul or SRF.