Corona SDK physics.removeBody() cannot be called ... during collision event.

game.lua

local storyboard = require( "storyboard" )
local physics = require( "physics" )

local scene = storyboard.newScene( "game" )

local box
local ground

function scene:createScene( event )
    local group = self.view

    box = display.newRect( 0, 0, 200, 200 )
    box.x = display.contentCenterX
    box.y = display.contentCenterY
    box:setFillColor( 0, 1, 0 )

    group:insert( box )

    ground = display.newRect( 0, 0, 600, 100 )
    ground.x = display.contentCenterX
    ground.y = display.contentCenterY + 600
    ground:setFillColor( 1, 0, 0 )

    group:insert( ground )
end

function scene:enterScene( event )
    local group = self.view

    physics.start()

    physics.addBody( box, "dynamic", { density = 1, friction = 1, bounce = 0.5 } )
    physics.addBody( ground, "static", { density = 1, friction = 1, bounce = 0.5 } )

    box.collided = false

    function box:collision( event )
        if not box.collided then
            box.collided = true
            storyboard.gotoScene( "start" )
        end

        return true
    end

    box:addEventListener( "collision", box )
end

function scene:exitScene( event )
    local group = self.view

    physics.pause()

    physics.removeBody( box )
    physics.removeBody( ground )

    box:removeEventListener( "collision", box )
end

function scene:destroyScene( event )
    local group = self.view
end

scene:addEventListener( "createScene", scene )
scene:addEventListener( "enterScene", scene )
scene:addEventListener( "exitScene", scene )
scene:addEventListener( "destroyScene", scene )

return scene

main.lua

local storyboard = require( "storyboard" )

storyboard.gotoScene( "start" )

start.lua

local storyboard = require( "storyboard" )

local scene = storyboard.newScene( "start" )

local button

function scene:createScene( event )
    local group = self.view

    button = display.newRect( 0, 0, 400, 100 )
    button.x = display.contentCenterX
    button.y = display.contentCenterY

    group:insert( button )
end

function scene:enterScene( event )
    local group = self.view

    function button:touch( event )
        if event.phase == "ended" then
            storyboard.gotoScene( "game" )
        end

        return true
    end

    button:addEventListener( "touch", button )
end

function scene:exitScene( event )
    local group = self.view

    button:removeEventListener( "touch", button )
end

function scene:destroyScene( event )
    local group = self.view
end

scene:addEventListener( "createScene", scene )
scene:addEventListener( "enterScene", scene )
scene:addEventListener( "exitScene", scene )
scene:addEventListener( "destroyScene", scene )

return scene