Okay Trina Maniacs, What are You Doing to the Sep. 60 Calls?

That is a lot of volume for this one on a down day.
Table from Yahoo Finance:
Expire at close Fri, Sep 19, 2008

Strike	Symbol	Last	Chg	Bid	Ask	Vol	Open Int
10.00	TSLIU.X	38.60	0.00	26.50	27.60	1	19
12.50	TSLIV.X	29.00	0.00	24.00	25.20	0	18
15.00	TSLIY.X	18.60	0.00	21.50	22.60	0	9
17.50	TSLIW.X	29.90	0.00	19.10	20.30	7	52
20.00	TSLID.X	19.50	2.80	17.40	18.00	17	42
22.50	TSLIX.X	22.50	0.00	15.20	15.80	1	135
25.00	TSLIE.X	13.70	1.70	13.30	13.80	23	129
30.00	TSLIF.X	10.74	1.49	9.90	10.20	5	322
35.00	TSLIG.X	7.29	2.11	7.00	7.40	30	599
40.00	TSLIH.X	5.14	1.26	5.00	5.30	12	502
45.00	TSLII.X	3.60	0.88	3.40	3.70	83	1,101
50.00	TSLIJ.X	2.30	0.91	2.30	2.50	124	552
55.00	TSLIK.X	1.60	0.51	1.55	1.75	21	411
60.00	TSLIL.X	1.25	0.30	1.05	1.25	1,525	1,874
65.00	TSLIM.X	0.85	0.00	0.70	0.85	63	343