Yes, but not so much because I like Cam Johnson but because he fits the team better and it saves us $5M/yr and two years of Vassell's contract.
I rate Vassell and Cam about equally, but Vassell is a SG in my opinion and if we are getting Harper there is no room for him. Cam is that hybrid 3/4 who isn't exactly what we need but still fits better.
I saw a 3-way trade idea on Reddit that had us giving up Vassell and getting Cam and Goga (I think we'd have to add some SRPs to ORL to make this happen)... I'd be into that (I realize there are concerns about whatever altercation Goga once got into years ago, and honestly am not sure the Spurs would really put too much weight into that so long as the rest of Goga's background checked out).