Sounds like Johnson was getting cold feet about Britain exiting the EU and he got pushed out of the way by those who are serious about getting on with the exit.
Not exactly...
Luck Runs Out for a Leader of Brexit Campaign
By SARAH LYALL
JUNE 30, 2016
New York Times
http://www.nytimes.com/2016/07/01/world/europe/boris-johnson-brexit-conservatives.html
the effete elites are not maneuvering to have the uk IN the EU via oppressive treaties.