You can't spin a flexwing - too much directional stability and no separate yaw control, but you can have fun with spiral dives. 60 degree bank turns are reasonably entertaining as well.
All microlights in the UK with an MTOW above 390kg will have been spin tested, and possibly one or two under that. I don't think any are cleared for deliberate spinning at present. The spin recovery is generally throttle closed / stick central / rudder central (all at the same time).
G