That is unless you make up a jumper to be plugged in, in place of the removed relay...
I think it would be easier to just carry along a spare relay in that case. But if you find yourself in that situation without a spare or jumper, then you could remove the entire Brodie harness assembly and put it back to stock.
But BwanaDik does have a good question. I've always assumed that relays are pretty much bullet proof - can't recall the last time I've had one go out on a vehicle, if ever? Is there any reason to believe otherwise, especially since Brodie is using the largest amperage relay available?
Now this really going off the deep end. I have a Brodie relay in place to solve the ignition-failure problem, but are you seriously suggesting that the relay might fail, so I should maybe carry a spare relay? Or wire in a bypass? There are how many relays on the bike? Each one might fail; should we carry a spare for each? And without testing it in place, the spare might be bad, so should we carry two spares for each? Alternatively should we install bypass switches for each relay? And should we carry spare tires with us in case we get a blowout that can't be fixed with a plug or patch? And should we carry a spare alternator (or maybe two) in case that goes bad? And spare wheel bearings (and the associated tools--and don't forget the spare tools in case a tool breaks--to change them) in case a wheel bearing goes? (Or maybe two spares each in case one of the new spare bearings is bad?) And a spare battery--or two--in case it suddenly and catastrophically fails? And maybe two spare flashers in case I have a problem and have to park on the side of the road and the flasher fails?
Probably we should never leave our driveways without a follow-along pickup and trailer carrying a spare FJR. And really maybe a spare follow-along pickup and trailer carrying a spare FJR in case something happens to the first follow-along pickup and trailer carrying a spare FJR or in case the spare FJR won't start.
Where does it end? At some point you have to hitch up your genitalia and actually head out and ride. Maybe something will break. But probably it won't.