Hello David,

The number of rows cannot be changed dynamically at this time. You can submit this as a feature request on UserVoice, so that it is considered for implementation in a future release. As a workaround you may consider destroying and re-creating the widget.

Thank you Alex.  I'll go ahead and do all of those things, and follow these instructions for destruction:

http://docs.telerik.com/kendo-ui/intro/widget-basics/destroy