Trademark holder did a poor job researching his trademark and finds prior use in a domain name now attempts to abuse anti cyber squatting laws to grab domain.
I would argue that they did. Unfortunately the current law and case law give favor to a trademark holder, in this case Office Space Solutions, to get control of a domain name. They saw a domain name\trademark that wasn't being used filed the trademark, used it a bit, offered to buy it, and then went after the domain name using the tools created to break cybersquatters. It's a pretty standard method now a days to get control of a little used domain even if the owner doesn't want to sell at a reasonable* price.
I don't think it's right, but that's how the process works now a days.
*This is very subjective by the way. Reasonable for one isn't necessarily reasonable for another.