Ive heard that the TEC have been absolutely ruthless to the Crocs with rent, which is very poor form for a venue where a club has been loyal there for over 20 years. I realise the alternatives are not great, but if its only for a few seasons while the Crocs can save up some cash, become more viable, then they can go back to the TEC when demand is higher again, due to constant sell outs. Plus the TEC might be more flexible and welcome the Crocs back (because they will miss the rent they get from them) and offer a better deal.
Im loosely basing this scenario on a similar situation at Perth with the PEC/Challenge Stadium/PA evolvement.
Besides, right now it wouldn't hurt them to move there given the team is not really a championship contender, as they are rebuilding.
If they removed the tables from the court side, and added corporate boxes, I think it will be fine in the short term, with a view to moving back to the TEC.