DNF sounds like a gross exaggeration, certainly your biking skills will be off a few percent (not clear how long the bike part is, but 'sprint' sounds short) but continued heavy emphasis on running and usual on swimming should keep most of your conditioning together. If this is the type of tri event that you can draft in, I wouldn't obsess about it much at all. Depending on your age and prior conditioning the HTH
(century ride?) should not be a problem either. If you aren't in century condition now you might be a bit peaked the last 20-30miles. If you are in century condition, you won't lose that much in 3wks for an event in late August. OTOH if you are a top 5 or 10 contender, where losing 2-3wks might conceivably make a difference, why don't you have a second bike? :-). (I, know the answer is implicit in your second quote). The good thing is you are out there training at the usual level despite a significant crash.