I don't know how different your climate in Spain is from climate in Lebanon, I would think the timing for both areas to be fairly similar. So since you know the differences, you will have to make your own adjustments to your specific calendar.
After growth has stopped extending, that is the beginning of the time period where wiring becomes safe. During active growth the cambium tears loose more easily than during times when growth is not as active. You can wire through winter, but should stop wiring weeks before new growth begins in spring. There is a pretty wide range of time where wiring is safe to do.
Pruning is better when the tree is not dormant. That way wound healing can begin, and buds can develop so that they are fully formed before spring, so they can start growing in the first spring after the pruning. Winter pruning is too late to get new buds to grow the first spring, but you will get good response the second spring.
Scots pine is somewhat similar to mugo. There is overlap in timing as to when things can be done. Your club is not "wrong", but you can shift things more toward Vance's calendar
