To throw a curve means to do something unexpected that surprises or confuses someone, and in this context the speaker is surprising the others by saying they're not ready for employment.
Context: "They mentioned the two job interviews, and I confuse them by explaining I'm not ready for employment."
Hypothesis: They mention the two job interviews, and I throw a curve by explaining I'm not ready for employment.
Based on the context, is the hypothesis true, false, or unknown?