Normally when a nosewheel extends when the weight comes off it is straightened by a cam arrangement on the oleo. Some helicopters have a manual lock as well. Should the nosewheel not extend depending on type it can still fit it the nosewheel bay. However, if it is twisted off centre on lifting then it can go in sideways.
It then depends on the nosewheel design as to whether it can go in sideways or not; if it can one wheel or axle will normally thump the roof.