Smoker/Oven Hybrid on Ribs?

So...I have a little issue. Ribs are trimmed and rubbed, and then I was informed I had to be somewhere for an hour right in the middle of the cook. I was thinking about smoking the first 3 hours, then wrapping and throwing in the oven for two hours during the stretch I am gone, and then returning to glaze and finish on the smoker. I am very Leary about what could happen Temp wise were I to just leave them go on the smoker while I was gone. Any reason that plan wouldn't work?