BOULDER — The irony’s as cruel as an own goal, as cutting as a Lindsay Horan header. Only a handful of tickets were left after Memorial Day for the USA-South Korea friendly at Dick’s Sporting Goods Park on Saturday. Any other summer, Miranda Spencer and Annie Weaver would’ve snapped those puppies up. “We’re pretty sad we’re not going,” Weaver told me Tuesday with a rueful chuckle. “We would definitely be there,” Spencer added. They’ve got a good reason, though.