Did they recommend riding flats? I just started mountain biking again, was having a lot of trouble today engaging one of my cleats with the pedal. Had to ride lots of loose, sandy downhills with one foot loose (not by choice). Kind of scary. Was thinking flat might be easier to deal with, but I'm also a roadie and am so used to clipless.
The debate on flats vs. clipless on mountain bikes is long standing. I too am a roadie and very used to my clipless pedals there and had clipless on my mountain bike for awhile. But, as I learn the technical skills required I found myself worrying too much about whether I was in or out of my pedal in case I needed to do a fast bail out and then if I wanted to be out I often just had my foot slide back in freaking me out even more. I really feel like I've made some significant progress since I went to flats because I can push the envelope a bit more.