I guess you mean take out double, not negative double. A negative double is a double my responder after an overcall. Sure, it's semantics, but one should really not use misnomers. I'd prefer double as penalty here, but can also see the merits of using it as t/o. For me it's between pass and 2♠ here. 2♠ is overbidding slightly, but I can live with that. B)