I just think you need to consider how it might play out a little more thoughtfully. I have no idea why you assume it would happen in such a way as to give you an early warning.
Monero could have a pre-mine, meaning the original creators have a large stockpile unfair advantage that they can spend or not spend at whatever rate they want. But they probably wouldn't spend it in a way that would make it obvious, although if they did they'd spend it all at once, and you certainly wouldn't have time to react. There are plenty of other ways too, without delving too deep into Monero's technical specifics.