As a local, I have climbed this, and my friends of all climbed it several times. None of us have ever summitted via the ridge or from Bomber glacier side. We make a direct approach from upper read Lake and attain the diagonal crack that leads to the summit ridge. The Ridgewalk from bomber is treacherous as you found out. Also trying to attain it from the bomber glacier side, exposes you to a lot of exposure, and you have to cross the bergshrund. If you try it again, try it this way. Summitpost is wrong.
Thank you, Brandon! I really appreciate you sharing that info. Looking back at photos, I can definitely see that line. Nothing beats local expertise! I'd love the chance to get back up there soon.