Yeah, Mike, sometimes it can be really tough switching rolls.
I can flip the switch from Racer to Instructor quickly and easily, but it can be very hard sometimes to go the other way around & go from Instructor to Racer.
In fact I had some big issues with that in '08 when I had some race weekends right after a 2 day track day event and it was super hard to get into that race mentality. I was WAY off pace, like 4-5 seconds a lap! But luckily, Tony, the guy that runs the show, listens to me and the other instructors and we can influence the schedule a little bit. So he did his best in '09 and '10 to adjust it in that way that put our track days right AFTER our race weekends instead of just before... And my lap times this past season responded.
Bringing a 2nd bike to instruct on is a great idea to help with that... especially if it's a very different kind of bike and has a very different feel than your race bike... I did that a couple of times and I think it definitely helps you turn on that racer mentality a little quicker when you throw your leg over the race bike.