So, basically talk about building a stadium, but don't do it. Sign a 5 year roll over contract for as little Rent as possible and then, when Wasps cannot meet the Bond interest payments, put cash on the table? Don't forget naming rights which could still swing it in Wasps' favour.
I have no inside information, so this is just a cynical opinion...
If press reports in 2005 were accurate, the original term for the naming rights on the stadium should have already expired. That a new deal hasn't been announced suggests there is some kind of problem. How crucial is the presence of the Sky Blues to getting a new deal and how important is the money from the naming rights to ACL - who really knows...
If it is believed Wasps have overstretched themselves in buying into ACL, a tenant with a get out option might choose to exercise their right to leave the Ricoh to deprive ACL of the income it needs to sustain it's business (rent and possibly money from naming rights). If the Sky Blues did choose to leave the Ricoh a move to Northampton wouldn't be acceptable... but the owners might get away with a move to the Butts Arena (with capacity increased by temporary stands).
If Wasps have been starved of income and are facing the prospect of being unable to meet the bond payments (be it the half yearly payments, or maturity payouts) they might be willing to sell the stadium and relocate the team. Such an outcome would seem to be to the benefit of CCFC and CRFC.
Like I said, just a cynical opinion...