I assume you put in the statement to show that he _thinks_ going full time would make him more productive. But the flipside of that argument is what we _know_ which is he currently has another job.
So here you're showing that there's risk involved with your team. This risk would have to be balanced with an equally high or higher reward if you wanted to highlight it. Don't show an investor the door (in your deck) unless you want them to open it.
All it does is make me think that they aren't full time, and may not be committed. I also have questions about IP concerns.
These may not be serious issues, and they can be easily answered, but this statement is a distraction. You want your pitch deck to answer questions, not raise new ones.
