Nono, it is not about any revolution or usurping power. It was merely about seeing political capital / potential in general mood / public opinion call it whatever you want. And it is not necessary about being populist also. The vote was 52/48 for leave. Now the support for remain might be little higher but probably still around 50-55? No idea. But with time running out, probably more people will switch the position especially if the news and negotiations are not so smoothly going as were originally proclaimed to be..It is like bluffing, not everybody has the nerves to keep poker face in terms of possible big loss.
I´m merely saying, that in such case. I would not be surprise to see spiking support for remain option and that some politicians might try to use the potential. Even those who are for remain option from beginning. If you feel the support of enough people you can try a lot things of course in democratic ways. And of course this is merely my gaming vision of the system. I´m just observer from EU and really don´t know if there are such politicians, groups with such interest of political wings inside certain parties. Especially when British parliament seems not complete unified behind current direction.. I can just very well imagine it. :-)
I remember a few situation from our Czech parliament when political parties were trying very hard to get 101 majority from 200 and get cabinet going, there were hard bargaining and persuation of members of parliament from opposition to join, bribery, lot of accusations. Simply a lot of backstage fun....And can only imagine what fun must be there in UK parliament with so many different groups with different interests like "no deal", "soft deal".. :-)