vBulletin Licence Agreement
By installing and using vBulletin on your server, you agree to the following terms and conditions. Such agreement is either on your own behalf or on behalf of any corporate entity which employs you or which you represent ('Corporate Licensee'). In this Agreement, 'you' includes both the reader and any Corporate Licensee and 'Jelsoft' means Jelsoft Enterprises Limited

• The Software may not be used for anything that would represent or is associated with an Intellectual Property violation, including, but not limited to, engaging in any activity that infringes or misappropriates the intellectual property rights of others, including copyrights, trademarks, service marks, trade secrets, software piracy, and patents held by individuals, corporations, or other entities.
• If any of the terms of this Agreement are violated, Jelsoft reserves the right to revoke the licence at any time.
• Refunds will be given at the discretion of Jelsoft

Maybe deadmined you was a little to harsh and some personal issues got in the way. But they also have to follow the vBulletin licence. Maybe just drop you to a Sup Mod at that time. Or just a PM/IM warning. Just My $0.02.