Yes, I'm outputting tinyMCE-content in the grid. I'm building a multi-column layout system, where each content block contains one, two or three columns, depending on layout model.
I want to avoid creating a new template every time I want a different layout for content. User can insert a new block, choose model (one column, two equal etc), and fill column contents using tinymce. This allows rapid content inserting with unlimited block combinations.
In the screenshot the site consist of 4 blocks which are rearrangeable thanks to MIGX. It looks ugly, but hopefully it explains what I'm trying to accomplish.
The problems with tinymce in grid are just cosmetic and I can live with that. Sorry for my poor english