In the generation IV games (Diamond, Pearl, Platinum), there was a glitch where all weather conditions affect you if you do a specific thing in battle. Does this glitch still exist in the new games?
No.
According to Bulbapedia the only glitch in Gen V is the Sky Drop Glitch.
Source
Nope, only Gen IV (DPPt).
How to change your username How to add a user avatar Why was my post hidden? The points system Question etiquette Flags vs Downvotes Anime FAQ
Type a Pokemon name, type, move or ability to see instant results.