I said that this was a suggestion and that he should modify the distance to what he thinks is manageable other than the 90-95 minute run which I'll get to in a minute.
To me, what I've suggested isn't much mileage but the idea comes from having done this successfully with several runners who were in the same boat. In all of those cases I had them up to 10-12 miles a day and with a 15 mile day. But as I said, that was ages ago when people ran more, for the most part, than they do now. I don't know what runit has done volume wise so he'll need to make some judgements here.
But the whole idea here comes from Lydiard, who also had stale runners doing things similar to what I'm suggesting. As you may know and may or may disagree with, Lydiard thought that you could only do so much anaerobic running before it eroded your aerobic fitness. That's the basis for my ideas here. The antidote to that is to do more aerobic work. Now in this situation we aren't talking about doing a whole base building phase. But there have been situations that I've seen over the years where an athlete who looked to be "raced out" at the end of a long racing season did a couple weeks of easy aerobic work and came back. The most recent example I can think of was Mottram last year prior to winning the World Whatever That Was 3,000 meters in 2006.
I have no idea as to what the physiology involved here is. I've just seen this work enough times that I have confidence in it and anyway, runit asked for what Lydiard's respons to this would be.
The 90-95 minute run is a watered down version of Lydiard's standard solution to someone who's gotten stale; "Go for a 20 mile run at a pace so slow that grandmothers pushing baby carriages are passing you."
As runit hasn't ever done anything close to 20 miles I'm not going to send him off for a 20 regardless of how many grandmothers would pass him. But I will adopt the idea in principal and have him do a long (for him), slow (hopefully), run.
The key here is not doing anything that will result in much oxygen debt. I'll tell you right now that if he is still slow at regionals and asks why I'll probably say it's because he did the distance work too hard. Then we could get into a debate about whether or not that was the case.
I'll finish this explanation with one last example from the Lydiard approach. In "Kiwis Can Fly," John Walker is talking about the whole business of runners going stale and says that when most athletes go stale they respond by adding more fast sessions and end up spinning their wheels. But he and Dixon always responded to staleness by "jogging."