Without starliner? Pretty sure they didn’t pack enough undies. Hmmmmmmm? Will that interfere with other planned activities? Purty sure that’d be a yup!. Will Elon send an empty ship up to fetch them? For a price I’m sure. Deorbit the Boeing star liner into the Pacific.
No, they would either bump two from the next crew or add two more seats to the next dragon.
“Will Elon send an empty ship up to fetch them?”
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Maybe. More likely he’ll carry up the two Boeing/NASA astronauts’ vacuum-ready space suits which Boeing/NASA allegedly neglected to include when launching them to the ISS.
They need to get rid of the Boeing capsule which is taking up one of NASA’s two docking ports. And the Boeing capsule is apparently not programmed for autonomous undocking/reentry. Hence the need for the robust space suits in case of capsule depressurization,