Sploder would go offline due to no one paying for or managing the domain.
Adding onto this
Sploder is the property of Neurofuzzy, which is the property of geoff gaudreault. If geoff was to die, the rights to Neurofuzzy would be given to whomever he left them to (wife, cousin, uncle, etc). They would do whatever they wanted with all of Neurofuzzy's assets, including Sploder. meaning, it could either keep running or be shut down, it's up to them.
If geoff didn't leave Neurofuzzy to anyone, the company would have to be either bought or shut down, most likely the latter. no one running neurofuzzy means no one running sploder: No one paying for the domain. Sploder would be gone.
So, if Geoff was to leave his company to someone in his will, they would have the power to continue managing Sploder and it's domain. If he didn't, it would most likely be taken offline or bought by a third party company.