The fact that Johnson was ready to call a three line whip to oppose this motion and then U-turned, only goes to show how much of a rebellion is building in his party.
His days are definitely numbered and a drubbing in the May local elections could be the final straw - if he lasts that long.
It seems Johnson's arrogant "sorry not sorry" attitude when speaking to them privately, away from cameras, has sickened even his own backbench MPs, or a significant fraction. Imagine how much of a spoilt brat you have to be to upset that bunch of creeps and cronies. Either that or they know something we don't, or seen a photo so incriminating it'll never be released.