By "on a dime" you mean "In Two WeeksTM," right?
In the past, when significant problems arose, yes, bitcoin has been able to fork immediately. Blocks are not full, therefore, there is no immediate need for a fork at this time. If the need arises, it will be dealt with.
Err... You mean
this, way back when everyone in Bitcoin wasn't trying to tear each other a new one?When half of the people are claiming that there's no need, that Bitcoin was never even meant to ba A Peer-to-Peer Electronic Cash System, that everything's just fine because it's a store of value, I doubt anything will happen on a dime.
Core will just keep telling us that the reason they couldn't deliver as promised is due to bitcoin being very scientific and dangerous, and that's why shit will stay on testnet for Two More Weeks.