VBSEO removing formatting?

Hi guys, I've been having a discussion on vbulletin.org about the mysterious reasons why my forum has lost its formatting.

Thread can be found here: Having accessible source code formatting in Vbulletin - vBulletin.org Forum


Someone suggested that it might be VBSEO:

Vbseo probally removes all spacing etc to reduce page size.

Is this true? If not.. does anyone maybe have some thoughts as to why this is happening?

That is a feature of vBSEO if you don't want it enable please disable Cleanup Html Code setting within vBSEO Control Panel

Thank you, that worked!