Okay, so last night, I made another stroll online and I went in with a 2v2: me and a Lv. 899 Raiden against a Raiden/Radec team. Then, the whole game glitched out like no tomorrow.
The Ready stage repeated itself infinitely with the ''Fight!'' one appearing occasionally, but we never actually fought. So, I ended the session.
What happened? I was playing on Vita, by the way.